small edits, a link didn't work anyway

CONTRIBUTING.md

@@ -6,8 +6,7 @@ These guidelines are designed to make it as easy as possible to get involved. If
 
 Before you start you'll need to set up a free [GitHub][link_github] account and sign in. Here are some [instructions][link_signupinstructions].
 If you are not familiar with version control systems such as git,
- [introductions and tutorials](http://www.reproducibleimaging.org/module-reproducible-basics/02-vcs/)
- may be found on [ReproducibleImaging.org](https://www.reproducibleimaging.org/).
+ introductions and tutorials may be found [here](http://www.reproducibleimaging.org/module-reproducible-basics/02-vcs/).
 
 Already know what you're looking for in this guide? Jump to the following sections:
 * [Understanding issue labels](#issue-labels)
@@ -22,7 +21,7 @@ The current list of issue labels are [here][link_labels] and include:
 
 * [![Bugs](https://img.shields.io/badge/-bugs-fc2929.svg)][link_bugs] *These issues point to problems in the project.*
 
-    If you find new a bug, please provide as much information as possible to recreate the error.
+    If you find a new bug, please provide as much information as possible to recreate the error.
     The [issue template][link_issue_template] will automatically populate any new issue you open, and contains information we've found to be helpful in addressing bug reports.
     Please fill it out to the best of your ability!