Merge pull request #4400 from bacongobbler/fix-4379

soften the recommendation of hypens in chart names

docs/chart_best_practices/conventions.md

@@ -4,19 +4,21 @@ This part of the Best Practices Guide explains general conventions.
 
 ## Chart Names
 
-Chart names should be lower case letters and numbers. Dashes (-) are not allowed:
+Chart names should use lower case letters and numbers, and start with a letter.
 
-Examples:
+Hyphens (-) are allowed, but are known to be a little trickier to work with in Helm templates (see [issue #2192](https://github.com/helm/helm/issues/2192) for more information).
+
+Here are a few examples of good chart names from the [Helm Community Charts](https://github.com/helm/charts):
 
 ```
 drupal
-cluster01
+cert-manager
-aws-cluster-autoscaler #incorrect do not use dashes in the name
+oauth2-proxy
 ```
 
 Neither uppercase letters nor underscores should be used in chart names. Dots should not be used in chart names.
 
-The directory that contains a chart MUST have the same name as the chart. Thus, the chart `nginx-lego` MUST be created in a directory called `nginx-lego/`. This is not merely a stylistic detail, but a requirement of the Helm Chart format.
+The directory that contains a chart MUST have the same name as the chart. Thus, the chart `cert-manager` MUST be created in a directory called `cert-manager/`. This is not merely a stylistic detail, but a requirement of the Helm Chart format.
 
 ## Version Numbers