doc: fix a markdown error in CTC meeting minutes

This fixes a markdown formatting error in 2016-07-13 CTC meeting
minutes, __proto__ was rendered incorrectly.

This was found by remark-lint.

PR-URL: https://github.com/nodejs/node/pull/7729
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Robert Jefe Lindstaedt <robert.lindstaedt@gmail.com>

doc/ctc-meetings/2016-07-13.md

@@ -169,7 +169,7 @@ ELOOP issue has been resolved. Windows problem being addressed in another PR. Ma
 
 ### http: don't inherit from Object.prototype [#6102](https://github.com/nodejs/node/pull/6102)
 
-@mscdex: Prevent clash of header names with properties inherited from Object (e.g., __proto__). An object with a null prototype is already being used for the same purpose in `querystring.parse` since v6 release.
+@mscdex: Prevent clash of header names with properties inherited from Object (e.g., `__proto__`). An object with a null prototype is already being used for the same purpose in `querystring.parse` since v6 release.
 
 @mscdex: Some have suggested cherry-picking some methods from Object such as `toString`: