Docs: Update filename to file name

Details

Updates "filename" to "file name" as per the recent style guide update. !138239 (merged).

Some occurrences of filename have already been updated in !138389 (comment 1690227880), but the approach to use regex resulted in a large proportion of filename being missed.

Proposal

Update the remaining occurrences of filename:

  • "Filenames" to "File names"
  • "filenames" to "file names"
  • "Filename" to "File name"
  • "filename" to "file name"

The following occurrences of filename do not need to be updated:

  • filename in code samples.
  • filename with backticks that refers specifically to items in code samples.

The changes need to be made in the following repositories:

Further details

Edited by Fiona Neill