Update mg_hexdump_connection.md

docs/c-api/util.h/mg_hexdump_connection.md

@@ -7,7 +7,7 @@ signature: |
                              const void *buf, int num_bytes, int ev);
 ---
 
-Generates human-readable hexdump of the data sent or received by connection.
+Generates human-readable hexdump of the data sent or received by the connection.
 `path` is a file name where hexdump should be written. `num_bytes` is
 a number of bytes sent/received. `ev` is one of the `MG_*` events sent to
 an event handler. This function is supposed to be called from the