help pages added

Author: oliviakowalczyk

docs/help/index.md

@@ -0,0 +1,11 @@
+# SPM help
+
+## :octicons-mail: SPM mailing list
+
+If you have questions about SPM, please use the [SPM mailing list](https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=SPM). 
+
+Before posting a question, please consult the list archives using the [search option](https://www.jiscmail.ac.uk/cgi-bin/webadmin?S1=SPM) to check if you can find a solution to your problem. 
+
+## :octicons-mark-github: Issues
+
+If you think you have discovered a problem with SPM, please report it by [creating an issue](https://github.com/spm/spm/issues/new/choose) on [GitHub](https://github.com/spm). 

mkdocs.yml

@@ -230,7 +230,7 @@ nav:
     - 'Versioning':   'development/versioning.md'
     - 'Release':      'development/release.md'
   - 'Help': 
-    - 'SPM discussion list': 'https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=SPM'
+    - 'help/index.md'
 
 markdown_extensions:
   - abbr