[simple-scan] Update all help screenshots with the latest application version

[Bartosz <bkosiorek src gnome org>]

commit a4f692f7b975384cd915903c3154c6c03fdfd3e2
Author: Bartosz Kosiorek <gang65 poczta onet pl>
Date:   Sat Apr 18 14:03:37 2020 +0200

    Update all help screenshots with the latest application version

 README.md                          |   9 ++++++++-
 help/cs/figures/preferences.png    | Bin 30380 -> 27879 bytes
 help/de/figures/preferences.png    | Bin 29180 -> 26577 bytes
 help/es/figures/preferences.png    | Bin 0 -> 25854 bytes
 help/pt_BR/figures/preferences.png | Bin 47907 -> 27373 bytes
 help/tr/figures/preferences.png    | Bin 0 -> 22287 bytes
 6 files changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index eade28d..bd5d555 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ command line
 by the SANE project - these allow to to easily see and control all the
 settings your driver provides.
 
-If XSane is also not working, then the issue could be casued by wrongly
+If XSane is also not working, then the issue could be caused by wrongly
 loaded backend. To enable debug traces on Sane, set `SANE_DEBUG_DLL`
 environment variable:
 
@@ -96,3 +96,10 @@ A lot of information about translation process can be found at
 [GNOME TranslationProject](https://wiki.gnome.org/TranslationProject/).
 The translation files for *Document Scanner* User Interface and User Guide,
 are available [here](https://l10n.gnome.org/module/simple-scan/).
+
+To be able to run Document Scanner in selected language, the `LANGUAGE` could be used.
+For example to run Document Scanner in Polish language:
+
+```
+$ LANGUAGE=pl XDG_DATA_DIRS=_install/share:$XDG_DATA_DIRS ./_install/bin/simple-scan
+```
diff --git a/help/cs/figures/preferences.png b/help/cs/figures/preferences.png
index 40a9852..28dfc9b 100644
Binary files a/help/cs/figures/preferences.png and b/help/cs/figures/preferences.png differ
diff --git a/help/de/figures/preferences.png b/help/de/figures/preferences.png
index ab59993..06543ab 100644
Binary files a/help/de/figures/preferences.png and b/help/de/figures/preferences.png differ
diff --git a/help/es/figures/preferences.png b/help/es/figures/preferences.png
new file mode 100644
index 0000000..7817f1c
Binary files /dev/null and b/help/es/figures/preferences.png differ
diff --git a/help/pt_BR/figures/preferences.png b/help/pt_BR/figures/preferences.png
index b9cf1ca..b89d795 100644
Binary files a/help/pt_BR/figures/preferences.png and b/help/pt_BR/figures/preferences.png differ
diff --git a/help/tr/figures/preferences.png b/help/tr/figures/preferences.png
new file mode 100644
index 0000000..d9ba8fc
Binary files /dev/null and b/help/tr/figures/preferences.png differ