[Monitor] Update readme.md (#20064)

* Update readme.md

* Update readme.python.md

Author: BigCat20196

specification/monitor/resource-manager/readme.md

@@ -713,6 +713,16 @@ input-file:
 - Microsoft.Insights/stable/2018-09-01/actionGroups_API.json
 ```
 
+### Tag: package-2018-09-01-python-only
+
+These settings apply only when `--tag=package-2018-09-01-python-only` is specified on the command line.
+
+``` yaml $(tag) == 'package-2018-09-01-python-only'
+input-file:
+- Microsoft.Insights/stable/2018-09-01/actionGroups_API.json
+- Microsoft.Insights/stable/2018-09-01/metricBaselines_API.json
+```
+
 ### Tag: package-2018-06-01-preview-only
 
 These settings apply only when `--tag=package-2018-06-01-preview-only` is specified on the command line.

specification/monitor/resource-manager/readme.python.md

@@ -33,7 +33,7 @@ batch:
   - tag: package-2019-06-01-only
   - tag: package-2019-03-01-only
   - tag: package-2018-11-27-preview-only
-  - tag: package-2018-09-01-only
+  - tag: package-2018-09-01-python-only
   - tag: package-2018-06-01-preview-only
   - tag: package-2018-04-16-only
   - tag: package-2018-03-01-only
@@ -203,12 +203,12 @@ namespace: $(python-base-namespace).v2018_11_27_preview
 output-folder: $(python-sdks-folder)/$(python-base-folder)/v2018_11_27_preview
 ```
 
-### Tag: package-2018-09-01-only and python
+### Tag: package-2018-09-01-python-only and python
 
-These settings apply only when `--tag=package-2018-09-01-only --python` is specified on the command line.
+These settings apply only when `--tag=package-2018-09-01-python-only --python` is specified on the command line.
 Please also specify `--python-sdks-folder=<path to the root directory of your azure-sdk-for-python clone>`.
 
-``` yaml $(tag) == 'package-2018-09-01-only'
+``` yaml $(tag) == 'package-2018-09-01-python-only'
 namespace: $(python-base-namespace).v2018_09_01
 output-folder: $(python-sdks-folder)/$(python-base-folder)/v2018_09_01
 ```