*: replace file(s) syntax and add path/to/ to more things (#9592)

* Fix file(s) and more path/to

* Update pages.it/common/rm.md

Co-authored-by: Emily Grace Seville <EmilySeville7cfg@gmail.com>

* thanks emily your suggestion was dogshit

https://github.com/tldr-pages/tldr/blob/main/contributing-guides/translation-templates/common-arguments.md

Co-authored-by: Emily Grace Seville <EmilySeville7cfg@gmail.com>

pages/common/base64.md

@@ -5,11 +5,11 @@
 
 - Encode the contents of a file as base64 and write the result to `stdout`:
 
-`base64 {{filename}}`
+`base64 {{path/to/file}}`
 
 - Decode the base64 contents of a file and write the result to `stdout`:
 
-`base64 --decode {{filename}}`
+`base64 --decode {{path/to/file}}`
 
 - Encode from `stdin`: