Implement linter feedback

Author: cimnine

PRINCIPALS.md

@@ -13,7 +13,7 @@ This means, that …
 - … sometimes nobody is looking at bugs, or they are not fixed as fast as one might like -- or not at all.
 - … sometimes PRs are not reviewed for an extended period.
 
-Everyone is welcome to provide improvements and bug fixes to the benefit of everyone else.
+Everyone is welcome to provide improvements and bugfixes to the benefit of everyone else.
 
 ## Development Principals
 

README.md

@@ -133,7 +133,7 @@ To check the version installed on your system run `docker --version` and `docker
 ## Updating
 
 Please read [the release notes][releases] carefully when updating to a new image version.
-Note that the version of the NetBox Docker container image must stay in sync with the version of the git repository.
+Note that the version of the NetBox Docker container image must stay in sync with the version of the Git repository.
 
 If you update for the first time, be sure [to follow our _How To Update NetBox Docker_ guide in the wiki][netbox-docker-wiki-updating].