[release/v1.4] import.file is GA (#1947)

Co-authored-by: William Dumont <[email protected]>

docs/sources/reference/config-blocks/import.file.md

@@ -4,12 +4,8 @@ description: Learn about the import.file configuration block
 title: import.file
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 # import.file
 
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 The `import.file` block imports custom components from a file or a directory and exposes them to the importer.
 `import.file` blocks must be given a label that determines the namespace where custom components are exposed.