doc: fix `--env-file` docs to contain the valid quotes
this just fixes a typo in the docs saying that \
can be used in .env
files to define variable values.
Instead, backtick `
should be a vvalid value for that
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this just fixes a typo in the docs saying that \
can be used in .env
files to define variable values.
Instead, backtick `
should be a vvalid value for that