Fix two typos in the merge docs.
diff --git a/include/git2/merge.h b/include/git2/merge.h
index af8f360..ce3ed8e 100644
--- a/include/git2/merge.h
+++ b/include/git2/merge.h
@@ -23,8 +23,8 @@
GIT_BEGIN_DECL
/**
- * Flags for `git_mrege_tree` options. A combination of these flags can be
- * passed in via the `flags` vlaue in the `git_merge_tree_opts`.
+ * Flags for `git_merge_tree` options. A combination of these flags can be
+ * passed in via the `flags` value in the `git_merge_tree_opts`.
*/
typedef enum {
/** Detect renames */