add import_schema to connection reference docs (added in .20)

docs/reference/config-files/connection.md

@@ -12,13 +12,15 @@ Most `connection` arguments are plugin-specific, and they are used to specify cr
 ## Supported options  
 | Argument | Default | Values | Description 
 |-|-|-|-
+| `import_schema` | `enabled` | `enabled`, `disabled` |  Enable or disable the creation of a Postgres schema for this connection. When `import_schema` is disabled, Steampipe will not create a schema for the connection (and will delete it if it exists), but the connection will still be queryable from any aggregator that includes it.  For installations with a large number of connections, setting `import_schema` to `disabled` can decrease startup time and increase performance.
 | `plugin` | none     | [plugin version string](#plugin-version-strings) |  The plugin version that this connection uses.  This must refer to an [installed plugin version](/docs/managing/plugins#installing-plugins).
 | `type`   | `plugin` | `plugin`, `aggregator` | The type of connection  - [plugin connection](/docs/managing/plugins#installing-plugins) or [aggregator](/docs/managing/connections#using-aggregators).
 | `{plugin argument}`| varies |  varies|  Additional options are defined in each plugin - refer to the documentation for your plugin on the [Steampipe Hub](https://hub.steampipe.io/plugins).
 
 
 ### Plugin Version Strings 
 
+
 Steampipe plugin versions are in the format:
 ```
 [{organization}/]{plugin name}[@release stream]
@@ -66,24 +68,25 @@ connection "myplugin" {
 ```hcl
 connection "aws_all" {
   type        = "aggregator"
-  plugin      = "aws"  
+  plugin      = "aws"
   connections = ["aws_*"]
 }
 
 connection "aws_01" {
-  plugin      = "aws" 
-  profile     = "aws_01"
-  regions     = ["*"]
+  plugin        = "aws"
+  profile       = "aws_01"
+  regions       = ["*"]
 }
 
 connection "aws_02" {
-  plugin      = "aws" 
-  profile     = "aws_02"
-  regions     = ["us-*", "eu-*"]
+  plugin        = "aws"
+  import_schema = "disabled"
+  profile       = "aws_02"
+  regions       = ["us-*", "eu-*"]
 }
 
 connection "aws_03" {
-  plugin      = "aws" 
+  plugin      = "aws"
   aws_access_key_id = AKIA4YFAKEKEYXTDS252
   aws_secret_access_key = SH42YMW5p3EThisIsNotRealzTiEUwXN8BOIOF5J8m
   regions     = ["us-east-1", "us-west-2"]