[receiver/activedirectoryds] [docs] Update example in README (#37424)

<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
#### Description

Update example in README to reflect map instead of bool that is
expected.

```
$ otelcol --version                                                                                                                          
otelcontribcol version 0.118.0-dev 

$ otelcol validate --config config.yaml
Error: failed to get config: cannot unmarshal the configuration: decoding failed due to the following error(s):

error decoding 'receivers': error reading configuration for "active_directory_ds": decoding failed due to the following error(s):

'metrics.active_directory.ds.replication.network.io' expected a map, got 'bool'
2025/01/22 18:33:20 collector server run finished with error: failed to get config: cannot unmarshal the configuration: decoding failed due to the following
 error(s):

error decoding 'receivers': error reading configuration for "active_directory_ds": decoding failed due to the following error(s):

'metrics.active_directory.ds.replication.network.io' expected a map, got 'bool'


```

<!-- Issue number (e.g. #1234) or full URL to issue, if applicable. -->
#### Link to tracking issue
Fixes

<!--Describe what testing was performed and which tests were added.-->
#### Testing

<!--Describe the documentation added.-->
#### Documentation
Updated example used in README for this receiver to not throw errors. 

<!--Please delete paragraphs that you did not use before submitting.-->

receiver/activedirectorydsreceiver/README.md

@@ -13,7 +13,7 @@
 [contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
 <!-- end autogenerated section -->
 
-The `active_directory_ds` receiver scrapes metric relating to an Active Directory domain controller using the Windows Performance Counters.
+The `active_directory_ds` receiver scrapes metrics relating to an Active Directory domain controller using the Windows Performance Counters.
 
 ## Configuration
 The following settings are optional:
@@ -28,10 +28,11 @@ receivers:
     collection_interval: 10s
     metrics:
       # Disable the active_directory.ds.replication.network.io metric from being emitted
-      active_directory.ds.replication.network.io: false
+      active_directory.ds.replication.network.io:
+        enabled: false
 ```
 
-The full list of settings exposed for this receiver are documented [here](./config.go) with detailed sample configurations [here](./testdata/config.yaml).
+The full list of settings exposed for this receiver is documented [here](./config.go), along with detailed sample configurations [here](./testdata/config.yaml).
 
 ## Metrics