fix md rendering of grafana's readme, (#1929)

library/ix-dev/community/grafana/Chart.yaml

@@ -3,7 +3,7 @@ description: Grafana is the open source analytics & monitoring solution for ever
 annotations:
   title: Grafana
 type: application
-version: 1.2.2
+version: 1.2.3
 apiVersion: v2
 appVersion: 10.2.3
 kubeVersion: '>=1.16.0-0'

library/ix-dev/community/grafana/README.md

@@ -6,7 +6,7 @@ Additional configuration can be made by adding additional environment variables
 Here is the available [configuration documentation](https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/)
 
 Use the following syntax:
-`GF_<SECTION-NAME>_<KEY-NAME>`
+`GF_[SECTION-NAME]_[KEY-NAME]`
 
 Example:
 `GF_SMTP_ENABLED`

library/ix-dev/community/grafana/app-readme.md

@@ -6,7 +6,7 @@ Additional configuration can be made by adding additional environment variables
 Here is the available [configuration documentation](https://grafana.com/docs/grafana/latest/setup-grafana/configure-grafana/)
 
 Use the following syntax:
-`GF_<SECTION-NAME>_<KEY-NAME>`
+`GF_[SECTION-NAME]_[KEY-NAME]`
 
 Example:
 `GF_SMTP_ENABLED`