Update issue templates (#7740)

.github/ISSUE_TEMPLATE/bug_template.yml

@@ -5,11 +5,12 @@ labels: ['bug']
 body:
   - type: markdown
     attributes:
-      value: Thank you for taking the time to fill out this bug report. Please provide as much information as possible to help us understand and address the issue effectively.
+      value: Thank you for taking the time to fill out this bug report. Please provide as much information as possible
+       to help us understand and address the issue effectively.
 
   - type: checkboxes
     attributes:
-      label: Is there an existing issue for the same bug?
+      label: Is there an existing issue for the same bug? (If one exists, thumbs up or comment on the issue instead).
       description: Please check if an issue already exists for the bug you encountered.
       options:
       - label: I have checked the existing issues.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,6 +1,6 @@
 ---
-name: Feature Request
-about: Suggest an idea for OpenHands features
+name: Feature Request or Enhancement
+about: Suggest an idea for an OpenHands feature or enhancement
 title: ''
 labels: 'enhancement'
 assignees: ''
@@ -9,10 +9,6 @@ assignees: ''
 
 **What problem or use case are you trying to solve?**
 
-**Describe the UX of the solution you'd like**
-
-**Do you have thoughts on the technical implementation?**
-
-**Describe alternatives you've considered**
+**Describe the UX or technical implementation you have in mind**
 
 **Additional context**

.github/ISSUE_TEMPLATE/technical_proposal.md

@@ -1,18 +0,0 @@
----
-name: Technical Proposal
-about: Propose a new architecture or technology
-title: ''
-labels: 'proposal'
-assignees: ''
-
----
-
-**Summary**
-
-**Motivation**
-
-**Technical Design**
-
-**Alternatives to Consider**
-
-**Additional context**