[gnome-shell] extensions-tool: Remove GNOME Software reference from man page

[Marge Bot <marge-bot src gnome org>]

commit ea6433b2cb71759d5fffa0b075a891f6ac92d47c
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Aug 18 17:20:49 2021 +0200

    extensions-tool: Remove GNOME Software reference from man page
    
    It no longer manages extensions.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1956>

 subprojects/extensions-tool/man/gnome-extensions.txt | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/subprojects/extensions-tool/man/gnome-extensions.txt 
b/subprojects/extensions-tool/man/gnome-extensions.txt
index adc08e97a2..85d657bd9b 100644
--- a/subprojects/extensions-tool/man/gnome-extensions.txt
+++ b/subprojects/extensions-tool/man/gnome-extensions.txt
@@ -189,10 +189,9 @@ the expected location in the user's *$HOME*, so that it
 will be loaded in the next session.
 +
 It is mainly intended for testing, not as a replacement for
-GNOME Software or the extension website. As extensions have
-privileged access to the user's session, it is advised to
-never load extensions from untrusted sources without carefully
-reviewing their content.
+the extension website. As extensions have privileged access
+to the user's session, it is advised to never load extensions
+from untrusted sources without carefully reviewing their content.
 +
 .Options
   *--force*:::