add rust log filtering variable

Author: smk762

src/pages/komodo-defi-framework/setup/configure-mm2-json/index.mdx

@@ -114,9 +114,10 @@ The structure for adding additional coins can vary, please refer to the [listing
 | MM2\_CONF\_PATH     | string | A file path to load the `MM2.json` configuration file. Defaults to `MM2.json` in the same folder as the `mm2` binary.                                                                                                |
 | MM\_COINS\_PATH     | string | A file path to load the `coins` configuration file. A comprehensive version for public use is maintained in the [Komodo Platform coins github repository](https://github.com/KomodoPlatform/coins/blob/master/coins) |
 | MM\_LOG             | string | A file path to store the Komodo DeFi-API logs.                                                                                                                                                                       |
-| USERPASS            | string | For convenience, this variable can store the value of your `rpc_password` to be referenced in any shell scripts                                                                                                      |
 | MM\_CERT\_PATH      | string | Full path to TLS/SSL certificate file.                                                                                                                                                                               |
 | MM\_CERT\_KEY\_PATH | string | Full path to TLS/SSL certificate key file.                                                                                                                                                                           |
+| RUST_\LOG           | string | Global default log level is `info`. To modify the log level for specific module (e.g. for debugging `atomicdex_gossipsub::behaviour`) and keep the default at `info`, use the format `"info,atomicdex_gossipsub::behaviour=debug"` |
+
 
 ### What now?