fixed width table

PRTAGS.md

@@ -3,7 +3,7 @@ If you look at the list of current [Pull Request](https://github.com/rapidsai/cu
 
 PR = Pull Request
 
-|  TAG       |                                                       |
+|  TAG         |                                                       |
 |------------|-------------------------------------------------------|
 | WIP        | _Work In Progress_ - Within the RAPIDS cuGraph team, we try to open a PR when development starts.  This allows other to review code as it is being developed and provide feedback before too much code needs to be refactored.  It also allows process to be tracked |
 | skip-ci    | _Do Not Run CI_ - This flag prevents CI from being run.  It is good practice to include this with the **WIP** tag since code is typically not at a point where it will pass CI.