[pitivi] Fix source comment typos

[Alexandru Băluț <alexbalut src gnome org>]

commit 37c053ab7084202996ec07a5869ddabd6496d08f
Author: luz.paz <luzpaz users noreply github com>
Date:   Mon Aug 26 14:13:19 2019 -0400

    Fix source comment typos
    
    Found via ` codespell -q 3 -S *.po -L dur,que,uint`

 build/flatpak/pitivi-flatpak                                          | 2 +-
 docs/Development_workflow.md                                          | 2 +-
 docs/design/2008_design/2008_Architectural_Redesign/Browsers.md       | 2 +-
 .../design/2008_design/2008_Architectural_Redesign/Design_Thoughts.md | 2 +-
 docs/design/2008_design/2008_Plugin_Interface_development.md          | 2 +-
 docs/design/Plugins.md                                                | 4 ++--
 pitivi/render.py                                                      | 4 ++--
 7 files changed, 9 insertions(+), 9 deletions(-)
---
diff --git a/build/flatpak/pitivi-flatpak b/build/flatpak/pitivi-flatpak
index a693bf94..677f211e 100755
--- a/build/flatpak/pitivi-flatpak
+++ b/build/flatpak/pitivi-flatpak
@@ -156,7 +156,7 @@ def check_flatpak(verbose=True):
             if verbose:
                 Console.message("\n%sYou need to install %s >= %s"
                                 " to be able to use the '%s' script.\n\n"
-                                "You can find some informations about"
+                                "You can find some information about"
                                 " how to install it for your distribution at:\n"
                                 "    * http://flatpak.org/%s\n";, Colors.FAIL,
                                 app, required_version, sys.argv[0], Colors.ENDC)
diff --git a/docs/Development_workflow.md b/docs/Development_workflow.md
index 3e67cfe9..887d1b2d 100644
--- a/docs/Development_workflow.md
+++ b/docs/Development_workflow.md
@@ -54,7 +54,7 @@ want to create.
 
 1. In the [GitLab UI](https://gitlab.gnome.org/GNOME/pitivi) press the "fork"
    button (*WARNING: Make sure to be authenticated otherwise the button won't be
-   avalaible*)
+   available*)
 
 2. Add the remote git repository you just forked as a remote to your local git repository:
 
diff --git a/docs/design/2008_design/2008_Architectural_Redesign/Browsers.md 
b/docs/design/2008_design/2008_Architectural_Redesign/Browsers.md
index 23148090..76d12629 100644
--- a/docs/design/2008_design/2008_Architectural_Redesign/Browsers.md
+++ b/docs/design/2008_design/2008_Architectural_Redesign/Browsers.md
@@ -51,7 +51,7 @@ The browsers CAN also offer these functionality:
     `ObjectFactory` with the given uri. It returns an `ObjectFactory`
     which might be the same as the input, or a new one, or a a temporary
     new one.
--   Searching/Browsing functionnalities
+-   Searching/Browsing functionalities
 
 Browsers should use the **UI Bundle** system to provide adequate UI
 interfaces if needed.
diff --git a/docs/design/2008_design/2008_Architectural_Redesign/Design_Thoughts.md 
b/docs/design/2008_design/2008_Architectural_Redesign/Design_Thoughts.md
index 64bbe398..d0acc28a 100644
--- a/docs/design/2008_design/2008_Architectural_Redesign/Design_Thoughts.md
+++ b/docs/design/2008_design/2008_Architectural_Redesign/Design_Thoughts.md
@@ -169,7 +169,7 @@ It seriously needs to be rethinked.
             of an audio track)
             -   The 'media-converted' ones could maybe done on the fly
                 if you add a file of a given media type (ex:audio) into
-                a track of anothe media type (ex:video).
+                a track of another media type (ex:video).
 -   Allow easy transcoding, re-rendering or re-muxing of
     SubObjectFactory.
 -   Allow adding extra (meta)data
diff --git a/docs/design/2008_design/2008_Plugin_Interface_development.md 
b/docs/design/2008_design/2008_Plugin_Interface_development.md
index 6e5a4c70..38e9515c 100644
--- a/docs/design/2008_design/2008_Plugin_Interface_development.md
+++ b/docs/design/2008_design/2008_Plugin_Interface_development.md
@@ -121,7 +121,7 @@ configuration dialog.
 
 ### Current implementation
 
-The current implimentation is a mix-in object that replaces the
+The current implementation is a mix-in object that replaces the
 configure() method with our own gui-builder code (plugin authors that
 need more flexibility can create their own configure() method)
 
diff --git a/docs/design/Plugins.md b/docs/design/Plugins.md
index 02aeeb50..70b7f745 100644
--- a/docs/design/Plugins.md
+++ b/docs/design/Plugins.md
@@ -2,7 +2,7 @@
 
 The PiTiVi plugin system will help keep the core to a minimum codebase
 required for normal editing. The plugins will add various kind of
-functionnalities/interfaces for new features, special hardwares, online
+functionalities/interfaces for new features, special hardwares, online
 services, ....
 
 # Use Cases for Plugins
@@ -307,7 +307,7 @@ the most freedom.
 
 The main advantage of using interfaces over class inheritance is that
 the former defines relationships between items and keeps the system
-higly decoupled, while the latter constrains thee partecipants to a gree
+highly decoupled, while the latter constrains thee partecipants to a gree
 an “is a” relationship, thus creating strong coupling between classes.
 
 # Pluggable architecture proposal
diff --git a/pitivi/render.py b/pitivi/render.py
index 06f6743e..e3216473 100644
--- a/pitivi/render.py
+++ b/pitivi/render.py
@@ -47,9 +47,9 @@ from pitivi.utils.widgets import TextWidget
 
 
 class Encoders(Loggable):
-    """Registry of avalaible Muxers, Audio encoders and Video encoders.
+    """Registry of available Muxers, Audio encoders and Video encoders.
 
-    Also keeps the avalaible combinations of those.
+    Also keeps the available combinations of those.
 
     It is a singleton. Use `Encoders()` to access the instance.