Fail to configure nacos-config by exe nacos-config.sh

As per the shell script, the white-space should be discarded in lines below in nacos-config.txt as default.
version: v0.6.0

```
recovery.committing-retry-delay = 5
recovery.asyn-committing-retry-delay = 5
recovery.rollbacking-retry-delay = 5
recovery.timeout-retry-delay = 5
```

Start by reading nacos-config.sh and the default nacos-config.txt entries for the four recovery retry-delay settings. Run the script against the configuration and confirm that the resulting values discard the surrounding whitespace as requested.

Written by the indexing model from the issue text.