docs: update provider documentation schema

- Regenerate documentation with tfplugindocs to match current provider schema
- Fix page titles and attribute descriptions
- Ensure documentation is in sync with provider implementation

Author: petems

docs/data-sources/extip.md

@@ -8,6 +8,10 @@ description: |-
 
 # extip (Data Source)
 
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 <!-- schema generated by tfplugindocs -->
 ## Schema
 
@@ -16,7 +20,7 @@ description: |-
 - `client_timeout` (Number) The time to wait for a response in ms
 If not set, defaults to 1000 (1 second). Setting to 0 means infinite (no timeout)
 - `resolver` (String) The URL to use to resolve the external IP address
-If not set, defaults to <https://checkip.amazonaws.com/>
+If not set, defaults to https://checkip.amazonaws.com/
 - `validate_ip` (Boolean) Validate if the returned response is a valid ip address
 
 ### Read-Only

docs/index.md

@@ -7,5 +7,9 @@ description: |-
 
 # extip Provider
 
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 <!-- schema generated by tfplugindocs -->
 ## Schema