Fix typo in doc comment.
diff --git a/ndn-cpp/c/Interest.h b/ndn-cpp/c/Interest.h
index 76af56d..832fb96 100644
--- a/ndn-cpp/c/Interest.h
+++ b/ndn-cpp/c/Interest.h
@@ -91,7 +91,7 @@
 };
 
 /**
- * Initialize an ndn_Interest_init struct with the pre-allocated nameComponents and excludeEntries,
+ * Initialize an ndn_Interest struct with the pre-allocated nameComponents and excludeEntries,
  * and defaults for all the values.
  * @param self pointer to the ndn_Interest struct
  * @param nameComponents the pre-allocated array of ndn_NameComponent