Update documentation/mkdocs.yml

Co-authored-by: Davide Marchegiani <davide.marchegiani@gmail.com>

Author: chrisb13

documentation/mkdocs.yml

@@ -63,7 +63,7 @@ plugins:
   - bibtex:
       bib_file: references.bib
       csl_file: https://raw.githubusercontent.com/citation-style-language/styles/26eccff9e537f71494a4da7b91afac1adf571dc9/apa.csl
-   - resolve-absolute-urls
+  - resolve-absolute-urls
 
 markdown_extensions: 
   - attr_list