[pitivi] docs: Update meson deps build instructions

[Alexandru Băluț <alexbalut src gnome org>]

commit 8aca974d03b936d32e6389486e75ddaa2a64f852
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Sat Mar 13 18:02:58 2021 +0100

    docs: Update meson deps build instructions

 docs/HACKING.md                     | 28 +++++++++++++++-------------
 docs/attic/Building_with_Windows.md |  4 ++--
 2 files changed, 17 insertions(+), 15 deletions(-)
---
diff --git a/docs/HACKING.md b/docs/HACKING.md
index aa7a92ba5..bc67b4659 100644
--- a/docs/HACKING.md
+++ b/docs/HACKING.md
@@ -105,37 +105,39 @@ with `binstall`. See "Switching locales" below.
 
 ## Hacking on Pitivi dependencies (Meson)
 
-If you have to work on say, [GStreamer Editing 
Services](https://gstreamer.freedesktop.org/modules/gst-editing-services.html)
+If you have to work on say, [GStreamer Editing
+Services](https://gstreamer.freedesktop.org/modules/gst-editing-services.html)
 which is built using the Meson build system, first clone it into your
 `pitivi-dev` folder:
 ```
-(ptv-flatpak) $ git clone git://anongit.freedesktop.org/gstreamer/gst-editing-services
+(ptv-flatpak) $ cd pitivi-dev
+(ptv-flatpak) $ git clone git gitlab freedesktop org:gstreamer/gst-editing-services.git
 ```
 
-Prepare its build directory (Once it has been set up, you won't have to
-run `meson` again for this build directory):
+Prepare its build directory using the `setup` alias which runs `meson`. This has
+to be done only once:
 ```
-(ptv-flatpak) $ cd gst-editing-services && setup
+(ptv-flatpak) $ cd pitivi-dev/gst-editing-services
+(ptv-flatpak) $ setup
 Using Pitivi prefix in /.../pitivi-dev/pitivi-prefix
 Running in sandbox: meson mesonbuild/ --prefix=/app --libdir=lib -Ddisable_gtkdoc=true -Ddisable_doc=true
 ```
 
 Build and install it in the sandbox:
 ```
+(ptv-flatpak) $ cd pitivi-dev/gst-editing-services
 (ptv-flatpak) $ ninja -C mesonbuild/ install
 Using Pitivi prefix in /.../pitivi-dev/pitivi-prefix
 Running in sandbox: ninja -C mesonbuild/ install
 ```
 
-In the `(ptv-flatpak)` development environment `meson` and `ninja` are
-aliases which run meson and ninja in the flatpak sandbox.
+In the `(ptv-flatpak)` development environment `meson` and `ninja` are aliases
+which run meson and ninja in the flatpak sandbox.
 
-NOTE: When updating the environment with `ptvenv --update`,
-it will use your local dependencies repositories it finds in the
-`pitivi-dev` folder, instead of the default remote repositories.
-This means you have to update them yourself.
-Also beware that it will not take into account not committed
-changes.
+NOTE: When updating the environment with `ptvenv --update`, it will use your
+local dependencies repositories it finds in the `pitivi-dev` folder, instead of
+the default remote repositories. This means you have to update them yourself.
+Also beware that it only takes into account committed changes.
 
 
 ## Hacking on Pitivi dependencies (Autotools, Make, etc)
diff --git a/docs/attic/Building_with_Windows.md b/docs/attic/Building_with_Windows.md
index 19ada2b4f..6eb3f98ee 100644
--- a/docs/attic/Building_with_Windows.md
+++ b/docs/attic/Building_with_Windows.md
@@ -107,14 +107,14 @@ Save the file and restart your shell.
 
 The bootstrap will fail if git config is not set up. Do the following:
 
-`$ git config --global user.email `“`you example com`”\
+`$ git config --global user.email you example com`
 `$ git config --global user.name `“`Your`` ``Name`”
 
 # Compile
 
 ### Checkout cerbero
 
-`$ git clone 
`[`git://anongit.freedesktop.org/gstreamer/cerbero`](git://anongit.freedesktop.org/gstreamer/cerbero)
+`$ git clone git gitlab freedesktop org:gstreamer/cerbero.git`
 
 ## Install dependencies