Fix typo in comment.
diff --git a/.gitignore b/.gitignore
index 57e25f2..66e909f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 ## This file specifies the files and directories that can usually occur in a
-## developer build of this Git reporsitory.
+## developer build of this Git repository.
 ##
 ## Reference: https://git-scm.com/docs/gitignore
 ##