fix labels on issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,7 +2,7 @@
 name: Bug report
 about: Something in dwl isn't working correctly
 title: ''
-labels: 'Type: bug'
+labels: 'A: bug'
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/enhancement-idea.md

@@ -2,7 +2,7 @@
 name: Enhancement idea
 about: Suggest a feature or improvement
 title: ''
-labels: 'Type: enhancement'
+labels: 'A: enhancement'
 assignees: ''
 
 ---