dnf-module: add page (#17097)

Co-authored-by: Wiktor Perskawiec <wiktor@perskawiec.cc>

pages/linux/dnf-module.md

@@ -0,0 +1,20 @@
+# dnf module
+
+> Manage package modularity.
+> More information: <https://dnf.readthedocs.io/en/latest/command_ref.html#module-command>.
+
+- View the modularity overview:
+
+`dnf module list`
+
+- View modularity of a specific program:
+
+`dnf module list {{package_name}}`
+
+- Set a package to be enabled:
+
+`sudo dnf module enable {{package_name}}:{{stream}}`
+
+- Enable and install a specific version:
+
+`dnf module install {{package_name}}:{{stream}}`