Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -14,4 +14,4 @@ Intel® PCM is licensed using a [BSD 3-clause license](https://github.com/int
 Coding Style
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-While we don't enforce stringent coding style requirements, we do encourage adherence to standard coding style practices, such as those outlined in the Google C++ Style Guide (https://google.github.io/styleguide/cppguide.html). When submitting patches, we request that you maintain the style consistency with the surrounding code. We discourage the use of tabs; please use 4 spaces for indentation instead.
+While we don't enforce stringent coding style requirements, we do encourage adherence to standard coding style practices, such as those outlined in the [Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html). When submitting patches, we request that you maintain the style consistency with the surrounding code. We discourage the use of tabs; please use 4 spaces for indentation instead.