global: fix typo in `git_libgit2_init` description
diff --git a/include/git2/global.h b/include/git2/global.h
index ce5bdf4..2a87e10 100644
--- a/include/git2/global.h
+++ b/include/git2/global.h
@@ -14,7 +14,7 @@
/**
* Init the global state
*
- * This function must the called before any other libgit2 function in
+ * This function must be called before any other libgit2 function in
* order to set up global state and threading.
*
* This function may be called multiple times - it will return the number
