add textual links

CONTRIBUTING.md

@@ -25,11 +25,12 @@ https://git.bettercrypto.org/ach-master.git
   guide we're working on. It's also a good place for general
 cryptography-, software-, appliance- or administrative related questions that may arise when reading or reviewing this document.
 
-### Before you open a Pull Request (PR) on GitHub:
+### Before you open a Pull Request (PR) on GitHub
 
-1. Search open and closed issues for duplicates or previous discussions
+1. [Search open and closed
+   issues](https://github.com/BetterCrypto/Applied-Crypto-hardening/pulls?utf8=%E2%9C%93&q=) for duplicates or previous discussions
    related to the changes you propose.
-2. Please take some time to read up on the mailing list - over the years
+2. Please take some time to read up on the [mailing list](https://lists.cert.at/pipermail/ach/) - over the years
    we've discussed quite a few topics in depth and you might just find
     the answer you were looking for or the reason we chose a certain
    configuration setting.
@@ -42,14 +43,7 @@ cryptography-, software-, appliance- or administrative related questions that ma
 Feel free to add your name/handle to `src/acknowledgements.tex` (alphabetical
 order).
 
-
-### Resources
-
-* [Search GitHub Pull Requests](https://github.com/BetterCrypto/Applied-Crypto-hardening/pulls?utf8=%E2%9C%93&q=)
-* [Mailing-list Archive](https://lists.cert.at/pipermail/ach/)
-
-
-
+### Get started
 
 Thank you kindly! We hope you'll enjoy working with us on this document.