Fix docs lint warnings.

Author: sadiepowell

docs/4/installation/debian.md

@@ -77,7 +77,6 @@ If the checksum matches the one specified on the releases page you can proceed t
 
 To install the package pass the filename to `apt install`. If you want to check what extra packages will be installed first you can use the `--dry-run` flag.
 
-
 ```sh
 {%- for package in page.packages %}
 # Installs the package on {{ package }}

docs/4/installation/rhel.md

@@ -62,7 +62,6 @@ If the checksum matches the one specified on the releases page you can proceed t
 
 To install the package pass the filename to `dnf install`. If you want to check what extra packages will be installed first you can use `dnf deplist` instead.
 
-
 ```sh
 {%- for package in page.packages %}
 # Installs the package on {{ package }}

docs/4/installation/ubuntu.md

@@ -77,7 +77,6 @@ If the checksum matches the one specified on the releases page you can proceed t
 
 To install the package pass the filename to `apt install`. If you want to check what extra packages will be installed first you can use the `--dry-run` flag.
 
-
 ```sh
 {%- for package in page.packages %}
 # Installs the package on {{ package }}