Set "Layer5 Team" as default author byline in blog-writer agent

Co-authored-by: leecalcote <7570704+leecalcote@users.noreply.github.com>

Author: Copilot

.github/agents/QUICK_REFERENCE.md

@@ -151,7 +151,7 @@ import myImage from "./my-image.png";
 title: "Title Here"
 subtitle: "Subtitle here"
 date: YYYY-MM-DD HH:MM:SS -0530
-author: Author Name
+author: Layer5 Team
 thumbnail: ./image.png
 darkthumbnail: ./image.png
 description: "Meta description here"
@@ -167,6 +167,8 @@ product: Meshery
 ---
 ```
 
+**Note:** Always use "Layer5 Team" as the default author.
+
 ## RSS Feed Rules
 
 | Feed | Criteria |

.github/agents/blog-writer.yml

@@ -51,7 +51,7 @@ instructions: |
   title: "Compelling, SEO-optimized title (60 characters or less)"
   subtitle: "Descriptive subtitle providing context"
   date: YYYY-MM-DD HH:MM:SS -0530
-  author: Author Name (or Layer5 Team)
+  author: Layer5 Team
   thumbnail: ./image-name.png (or path to image)
   darkthumbnail: ./image-name-dark.png (or same as thumbnail)
   description: "SEO meta description (150-160 characters) summarizing the post"
@@ -73,6 +73,10 @@ instructions: |
   # - All news items appear in the News Feed (/news/feed.xml)
   ```
   
+  **Author Field:**
+  - **Default**: Use "Layer5 Team" as the author byline for all blog posts
+  - Only use a specific person's name if explicitly provided or for special cases like interviews
+  
   **RSS Feed Distribution:**
   Posts are automatically included in RSS feeds based on their category and tags:
   - **Meshery Community Feed**: Category "Meshery", "Announcements", or "Events" AND tags "Community", "Meshery", or "mesheryctl"