docs: update --output for db configure

docs/pages/database-access/reference/cli.mdx

@@ -127,7 +127,7 @@ $ teleport db configure create \
 | `--protocol` | Proxied database protocol. Supported are: `[postgres mysql mongodb cockroachdb redis sqlserver snowflake]`. |
 | `--uri` | Address the proxied database is reachable at. |
 | `--labels` | Comma-separated list of labels for the database, for example env=dev,dept=it |
-| `-o/--output` | Write to stdout with `-o=stdout`, the default config file with `-o=file`, or a custom path with `-o=file:///path` |
+| `-o/--output` | Write to stdout with `--output=stdout`, the default config file with `--output=file`, or a custom path with `--output=file:///path` |
 | `--dynamic-resources-labels` | Comma-separated list(s) of labels to match dynamic resources, for example env=dev,dept=it. Required to enable dynamic resources matching. |
 
 ## teleport db configure bootstrap