"file format" → "file type|media format|data format".
Looking at the text they provided about Chennai Express, it's possible they wanted to apply the synonym substitution to certain words in there, but since there are no formatted terms, there's nothing to replace. The user might have made a mistake or missed including the specific words they want to change. chennai express 123mkv
"digital releases" → "digital distributions|electronic releases|online versions". "file format" → "file type|media format|data format"