Change a dirty indentation
diff --git a/include/git2/tag.h b/include/git2/tag.h
index 086e4a6..bc05a0c 100644
--- a/include/git2/tag.h
+++ b/include/git2/tag.h
@@ -135,7 +135,7 @@ GIT_EXTERN(const char *) git_tag_message(git_tag *t);
* Create a new tag in the repository from an OID
*
* @param oid Pointer where to store the OID of the
- * newly created tag. If the tag already exists, this parameter
+ * newly created tag. If the tag already exists, this parameter
* will be the oid of the existed tag, and the function will
* return a GIT_EEXISTS error code.
*