fixed edit button link

Author: theely

mkdocs.yml

@@ -3,7 +3,7 @@ site_name: FirecREST v2 Documentation
 # provide a link to the docs in top RHS corner
 repo_url: https://github.com/eth-cscs/firecrest-v2/
 # provide a link to "edit this page" to each page
-edit_uri: edit/main/docs/
+edit_uri: edit/master/docs/
 
 nav:
   - Welcome: README.md
@@ -19,7 +19,6 @@ nav:
 theme:
   name: material
   language: en
-  #custom_dir: docs/.overrides
   features:
     - content.code.copy
     # add an "edit this page" icon on each page
@@ -99,10 +98,5 @@ markdown_extensions:
   # for captioning images
   - pymdownx.blocks.caption
 
-# disable mathjax until the "GET /javascripts/mathjax.js HTTP/1.1" code 404 errors are fixed
-#extra_javascript:
-#  - javascripts/mathjax.js
-#  - https://unpkg.com/mathjax@3/es5/tex-mml-chtml.js
-
 extra_css:
   - stylesheets/extra.css