Update the docs for postgres wire format changes in 1.6.0 (#3516)

# Description of Changes

Closes #3502. 

Adding section for more clarification (the remark in `Connection
Parameters` could be easy to miss)

# Expected complexity level and risk
1

# Testing

- [x] See the changes with the `pnpm dev`

---------

Signed-off-by: Mario Montoya <[email protected]>
Co-authored-by: John Detter <[email protected]>

Author: mamcx

docs/docs/08-SQL/02-pg-wire.md

@@ -91,6 +91,16 @@ _For PowerShell_:
 $env:PGPASSWORD = (spacetime login show --token | Select-String 'Your auth token.*is (.*)' | % { $_.Matches[0].Groups[1].Value })
 ```
 
+### Enabling _PGWire_ in SpacetimeDB Standalone
+
+_PGWire_ is disabled by default when starting a `SpacetimeDB Standalone` server.
+
+To enable it, start the server with the `--pg-port` option:
+
+```bash
+spacetime start --pg-port 5432 [ARGS]
+```
+
 ## Examples
 
 In the following example, we assume you are using the `quickstart-chat` database created in