minor doc fixes.

Author: agentzh

README.markdown

@@ -72,7 +72,6 @@ Synopsis
 
 A typical output of the /test location defined above is:
 
-```json
  read: ["header",["Content-Disposition","form-data; name=\"file1\"; filename=\"a.txt\"","Content-Disposition: form-data; name=\"file1\"; filename=\"a.txt\""]]
  read: ["header",["Content-Type","text\/plain","Content-Type: text\/plain"]]
  read: ["body","Hello"]
@@ -85,7 +84,6 @@ A typical output of the /test location defined above is:
  read: ["part_end"]
  read: ["eof"]
  read: ["eof"]
-```
 
 You can use the [lua-resty-string](https://github.com/agentzh/lua-resty-string) library to compute SHA-1 and MD5 digest of the file data incrementally. Here is such an example: