Update receiver/awscloudwatchreceiver/README.md

Co-authored-by: Sam DeHaan <[email protected]>

Author: dyl10s

receiver/awscloudwatchreceiver/README.md

@@ -50,7 +50,7 @@ This receiver uses the [AWS SDK](https://docs.aws.amazon.com/sdk-for-go/v1/devel
   - `prefix`: (optional) A prefix for log groups to limit the number of log groups discovered.
     - Only one of `prefix` or `pattern` can be specified. If both are omitted, all log streams up to the limit are collected.
   - `pattern`: (optional) A case-sensitive substring search on the log group names to limit the number of log groups discovered.
-    - Only one of `prefix` or `pattern` can be specified. If both are omitted, all log streams up to the limit are collected from.
+    - Only one of `prefix` or `pattern` can be specified. If both are omitted, all log streams up to the limit are collected.
   - `streams`: (optional) If `streams` is omitted, then all streams will be attempted to retrieve events from.
     - `names`: A list of full log stream names to filter the discovered log groups to collect from.
     - `prefixes`: A list of prefixes to filter the discovered log groups to collect from.