[gimp-help] Fix typo in README

[Jacob Boerema <jboerema src gnome org>]

commit 020f0773bab33e130f48401746fe957f96998637
Author: Jacob Boerema <jgboerema gmail com>
Date:   Fri Apr 22 12:45:04 2022 -0400

    Fix typo in README

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index 07a28564b..1514376bb 100644
--- a/README.md
+++ b/README.md
@@ -367,7 +367,7 @@ When all of the above are updated, run:
     charset is UTF-8 here, it wasn't for me, need to check this sometime)
 
 This should create the necessary po files for the newly added language.  
-Note: some po files for other languages may have been update too, but you
+Note: some po files for other languages may have been updated too, but you
 should only commit the files relevant for the new language.