pages/*: prefer brand name and add backticks around commands (#10422)

* pages/*: prefer brand name and add backticks around commands

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Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/common/diskonaut.md

@@ -3,11 +3,11 @@
 > Terminal disk space navigator, written in Rust.
 > More information: <https://github.com/imsnif/diskonaut>.
 
-- Start diskonaut in the current directory:
+- Start `diskonaut` in the current directory:
 
 `diskonaut`
 
-- Start diskonaut in a specific directory:
+- Start `diskonaut` in a specific directory:
 
 `diskonaut {{path/to/directory}}`