Fix RuleDocumentation link in Configuration.md

Author: K

Documentation/Configuration.md

@@ -110,7 +110,7 @@ An example `.swift-format` configuration file is shown below.
 
 In the `rules` block of `.swift-format`, you can specify which rules to apply
 when linting and formatting your project. Read the
-[rules documentation](Documentation/RuleDocumentation.md) to see the list of all
+[rules documentation](RuleDocumentation.md) to see the list of all
 supported linter and formatter rules, and their overview.
 
 You can also run this command to see the list of rules in the default