update issue templates (#11143)

Author: srambach

.github/ISSUE_TEMPLATE/PF6_alpha_bug_request.md

@@ -2,7 +2,7 @@
 name: Bug report
 about: Help us to improve PatternFly
 title: Bug - [Component] - [short description]
-labels: bug
+type: bug
 assignees: ''
 
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.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,7 +2,7 @@
 name: Developer experience
 about: Suggest an enhancement to the developer experience (DX). DX enhancements improve experience for those building UIs with PatternFly, but have little to no end user impact.
 title: "[short description]"
-labels: DevX
+type: DevX
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/devX_request.md

@@ -2,7 +2,7 @@
 name: Feature request
 about: Suggest a new feature for PatternFly. Features augment or impact end user experience and requires design input.
 title: "[Component] - [short description]"
-labels: Feature
+type: Feature
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/feature_request.md

@@ -2,7 +2,7 @@
 name: Tech debt
 about: Improvements to code that do not affect either user or product developers’ experiences.
 title: "[short description]"
-labels: 'Tech debt'
+type: 'Tech debt'
 assignees: ''
 
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