:books: update references to select "main" instead of "master" (#1346)

* :memo: update references to select "main" instead of "master"

* Remove unused variable

deploy/charts/external-secrets/README.md.gotmpl

@@ -1,4 +1,3 @@
-{{- $valuesYAML := "https://github.com/external-secrets/external-secrets/blob/master/deploy/charts/external-secrets/values.yaml" -}}
 {{- $chartRepo := "https://charts.external-secrets.io" -}}
 {{- $org := "external-secrets" -}}
 # External Secrets

hack/api-docs/mkdocs.yml

@@ -3,6 +3,7 @@ repo_url: https://github.com/external-secrets/external-secrets
 repo_name: External Secrets Operator
 site_dir: ../../site
 docs_dir: ../../docs
+edit_uri: ./edit/main/docs/
 remote_branch: gh-pages
 theme:
   name: material