templates: use correct label for Enhancement

enhancement -> Enhancement

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

.github/ISSUE_TEMPLATE/enhancement.md

diff --git a/.github/ISSUE_TEMPLATE/enhancement.md b/.github/ISSUE_TEMPLATE/enhancement.md
index 4ed407b..615db8f 100644
--- a/.github/ISSUE_TEMPLATE/enhancement.md
+++ b/.github/ISSUE_TEMPLATE/enhancement.md
@@ -2,7 +2,7 @@
 name: Enhancement
 about: Suggest enhancements to existing features
 title: ''
-labels: enhancement
+labels: Enhancement
 assignees: ''
 
 ---