refactor: standardize formatting and improve readability across core documents (#211)

### CHANGES

- Add newlines and spacing for improved readability
- Standardize instructional text for consistency
- Renumber lists within tasks for better clarity
- Add language identifiers to various code blocks
- Update placeholder text for improved consistency
- Adjust descriptions and wording in multiple files
- Update VS Code settings and dictionary words

.bmad-core/tasks/create-deep-research-prompt.md

@@ -187,7 +187,7 @@ Present these numbered options to the user:
 
 **Research Prompt Template:**
 
-```
+```markdown
 ## Research Objective
 [Clear statement of what this research aims to achieve]