Fixed a couple typos

CONTRIBUTING.md

@@ -97,4 +97,3 @@ base and make a nice first step:
 * Submit a PR to clarify documentation! While we do try to document all of
   the APIs, your fresh eyes on the documentation will find areas that are
   confusing much more easily.
-  

CONVENTIONS.md

@@ -211,7 +211,7 @@ GIT_INLINE(result_type) git_modulename_functionname(arg_list);
 
 ## Tests
 
-`libgit2` uses the (clar)[https://github.com/vmg/clar] testing framework.
+`libgit2` uses the [clar](https://github.com/vmg/clar) testing framework.
 
 All PRs should have corresponding tests.