Update best-practices.mdx

Author: alexeagle

configure/best-practices.mdx

@@ -77,7 +77,6 @@ try-import %workspace%/user.bazelrc
 ```
 (or any other file name) in your `{{ '<var>' }}workspace{{ '</var>' }}/.bazelrc`
 and add `user.bazelrc` to your `.gitignore`.
-
 The open-source
 [bazelrc-preset.bzl](https://github.com/bazel-contrib/bazelrc-preset.bzl)