[5.1.x] Removed unneeded OS reference on running the test suite in contributing docs.

mariahynes · sarahboyce · commit 0a1091f11835 · 2024-10-29T11:37:18.000+01:00
This is not needed as the console snippet has buttons that allows the user to choose their OS. Backport of 163e72e from main.
diff --git a/docs/intro/contributing.txt b/docs/intro/contributing.txt
@@ -217,8 +217,7 @@ a dependency for one or more of the Python packages. Consult the failing
 package's documentation or search the web with the error message that you
 encounter.
 
-Now we are ready to run the test suite. If you're using GNU/Linux, macOS, or
-some other flavor of Unix, run:
+Now we are ready to run the test suite:
 
 .. console::
 
