docs: fix minor grammar issue in MyFirstContribution.adoc

This commit corrects a small grammatical error in the MyFirstContribution
document to improve clarity and readability for new contributors.

Signed-off-by: QueenJcloud <[email protected]>

Author: QueenJcloud

Documentation/MyFirstContribution.adoc

@@ -26,7 +26,7 @@ useful additional context:
 [[getting-help]]
 === Getting Help
 
-If you get stuck, you can seek help in the following places.
+If you get stuck, you can ask for help on the mailing list or Git community channels listed below.
 
 ==== [email protected]