2c71edc2fc [wallet] [rpc] Fix importaddress help text (John Newbery)
Pull request description:
Help text for `importaddress` referred to the first parameter as `script`, when in fact it's `address`. Calling with a script argument fails:
```
→ bcli -named importaddress script=2N3qhMpHK8WNo7wv87W9eHMgvGyJU1593Ei
error code: -8
error message:
Unknown named parameter script
→ bcli -named importaddress address=2N3qhMpHK8WNo7wv87W9eHMgvGyJU1593Ei
# success!
```
Tree-SHA512: 24dcb2cbd0a43e25896b1c67fa0386df2453ec04d49a339e10992417b3921ce3df8a6aa5abba7d2237d6188b018948b2a21ea2f04d37120ad36c31c7b7fc9f1c