Fix typo in translated string

Took me surprisingly long to notice

Author: delvh

options/locale/locale_en-US.ini

@@ -1172,7 +1172,7 @@ commit_graph.monochrome = Mono
 commit_graph.color = Color
 commit.contained_in = This commit is contained in:
 commit.contained_in_default_branch = This commit is part of the default branch
-commit.load_referencing_branches_and_tags = Load branches and tags referencing this file
+commit.load_referencing_branches_and_tags = Load branches and tags referencing this commit
 blame = Blame
 download_file = Download file
 normal_view = Normal View