contrib: reformat

No functional changes.

Author: andreastt

CONTRIBUTING.md

@@ -1,24 +1,29 @@
-# Browser Testing and Tools Working Group
+Contributing
+============
 
-Contributions to this repository are intended to become part of Recommendation-track documents governed by the
-[W3C Patent Policy](https://www.w3.org/Consortium/Patent-Policy-20040205/) and
-[Software and Document License](https://www.w3.org/Consortium/Legal/copyright-software). To make substantive contributions to specifications, you must either participate
-in the relevant W3C Working Group or make a non-member patent licensing commitment.
+Contributions to this repository are intended to become part
+of Recommendation-track documents governed by the [W3C Patent
+Policy](https://www.w3.org/Consortium/Patent-Policy-20040205/)
+and [Software and Document
+License](https://www.w3.org/Consortium/Legal/copyright-software).
+To make substantive contributions to specifications, you must either
+participate in the relevant W3C Working Group or make a non-member
+patent licensing commitment.
 
-If you are not the sole contributor to a contribution (pull request), please identify all 
-contributors in the pull request comment.
+If you are not the sole contributor to a contribution (pull request),
+please identify all contributors in the pull request comment.
 
-To add a contributor (other than yourself, that's automatic), mark them one per line as follows:
+To add a contributor (other than yourself, that's automatic),
+mark them one per line as follows:
 
-```
-+@github_username
-```
+	+@github_username
 
-If you added a contributor by mistake, you can remove them in a comment with:
 
-```
--@github_username
-```
+If you added a contributor by mistake, you can remove them in a
+comment with:
 
-If you are making a pull request on behalf of someone else but you had no part in designing the 
-feature, you can remove yourself with the above syntax.
+	-@github_username
+
+If you are making a pull request on behalf of someone else but you
+had no part in designing the  feature, you can remove yourself with
+the above syntax.