Modify section headers in ci.md template

Updated section headers in CI issue template for consistency.

Signed-off-by: Lee Calcote <lee.calcote@layer5.io>

Author: leecalcote

.github/ISSUE_TEMPLATE/ci.md

@@ -6,19 +6,19 @@ labels: 'area/ci'
 assignees: ''
 ---
 
-#### Current Behavior
+### Current Behavior
 
 <!-- A brief description of what the problem is. (e.g. I need to be able to...) -->
 
-#### Desired Behavior
+### Desired Behavior
 
 <!-- A brief description of what you expected to happen. -->
 
-#### Implementation
+### Implementation
 
 <!-- Specifics on the approach to fulfilling the feature request. -->
 
-#### Acceptance Tests
+### Acceptance Tests
 
 <!-- Stipulations of functional behavior or non-functional items that must be in-place in order for the issue to be closed. -->