index.h: Fix minor typo
diff --git a/include/git2/index.h b/include/git2/index.h
index 7bb0c95..599512f 100644
--- a/include/git2/index.h
+++ b/include/git2/index.h
@@ -132,7 +132,7 @@ GIT_EXTERN(int) git_index_read(git_index *index);
GIT_EXTERN(int) git_index_write(git_index *index);
/**
- * Find the first index of any entires which point to given
+ * Find the first index of any entries which point to given
* path in the Git index.
*
* @param index an existing index object