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/workflows/brownfield-ui.yml

@@ -78,7 +78,7 @@ workflow:
         A[Start: UI Enhancement] --> B{Enhancement Complexity?}
         B -->|Complex/Significant| C[analyst: analyze existing UI]
         B -->|Simple| D{1 Story or 2-3 Stories?}
-        
+
         C --> E[pm: brownfield-prd.md]
         E --> F[ux-expert: front-end-spec.md]
         F --> G[architect: brownfield-architecture.md]
@@ -87,12 +87,12 @@ workflow:
         I -->|Yes| J[Return to relevant agent for fixes]
         I -->|No| K[Move to IDE Environment]
         J --> H
-        
+
         D -->|1 Story| L[pm/po/sm: brownfield-create-story]
         D -->|2-3 Stories| M[pm/po/sm: brownfield-create-epic]
         L --> N[Move to IDE Environment]
         M --> N
-        
+
         style K fill:#90EE90
         style N fill:#90EE90
         style E fill:#FFE4B5