fix(dx): Corrected contribution guidelines

CONTRIBUTING.md

@@ -12,9 +12,7 @@ Please note we have a code of conduct, please follow it in all your interactions
 2. Ensure that new functionality is covered by unit tests, and that the full suite of tests passes.
 3. Update the [README](README.md) with details of changes to the interface, this includes new environment 
    variables, exposed ports, useful file locations and container parameters.
-4. Increase the version numbers in any examples files and the README.md to the new version that this
-   Pull Request would represent. The versioning scheme we use is [SemVer](http://semver.org/).
-5. You may merge the Pull Request in once you have the sign-off of two other developers, or if you 
+4. You may merge the Pull Request in once you have the sign-off of two other developers, or if you 
    do not have permission to do that, you may request the second reviewer to merge it for you.
 
 ## Code of Conduct