Update mg_hexdump.md

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

@@ -6,10 +6,10 @@ signature: |
   int mg_hexdump(const void *buf, int len, char *dst, int dst_len);
 ---
 
-Generates human-readable hexdump of memory chunk.
+Generates a human-readable hexdump of memory chunk.
 
 Takes a memory buffer `buf` of length `len` and creates a hex dump of that
-buffer in `dst`. Generated output is a-la hexdump(1).
-Return length of generated string, excluding terminating `\0`. If returned
-length is bigger than `dst_len`, overflow bytes are discarded. 
+buffer in `dst`. The generated output is a-la hexdump(1).
+Returns the length of generated string, excluding terminating `\0`. If returned
+length is bigger than `dst_len`, the overflow bytes are discarded.