Update Contributing-to-ldmx-sw.md

Author: tvami

src/developing/Contributing-to-ldmx-sw.md

@@ -29,7 +29,7 @@ If you plan on starting a major (sub)project within the repository like adding a
 
 ### Coding rules and conventions
 
-Please read the [Coding rules]((developing/coding-rules.md)
+Please read the [Coding rules](developing/coding-rules.md)
 
 ### After Opening a PR
 After opening a PR, several different tests are run using [our GitHub Actions](https://github.com/LDMX-Software/ldmx-sw/actions). One of these tests, the "Recon Validation" takes about three hours to run, so it shouldn't be run on every commit pushed to a pull request. Instead, it is run when the PR is created or when marked "Ready for Review". This enables the following workflow for validating PRs.