Add link to beta repo in issue template, and fix 'feature' issue label (#1167)

* fix label for feature issue template

* add link to beta issues on issue template

* tweak wording of issue templates

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: true
+contact_links:
+  - name: tldraw Beta
+    url: https://github.com/tldraw/tldraw-beta/issues/new
+    about: Is your issue for the tldraw beta? Report it on the beta repo instead.

.github/ISSUE_TEMPLATE/feature.md

@@ -2,6 +2,6 @@
 name: Feature
 about: Begin discussion of a new feature.
 title: '[feature] Feature or improvement'
-labels: feature
+labels: enhancement
 assignees: ''
 ---