docs: add author information

docs/en-gb/blog/contents/gitlab-ops.md

@@ -3,6 +3,9 @@ title: GitLab Operations
 tags:
   - gitlab
   - devops
+author:
+  name: Zihlu Wang
+  email: real@zihluwang.me
 ---
 
 ## Setting the Default Language to Chinese in GitLab

docs/en-gb/blog/contents/macos-private-dns-hostname.md

@@ -4,6 +4,9 @@ tags:
   - macos
   - dns
   - terminal
+author:
+  name: Zihlu Wang
+  email: real@zihluwang.me
 ---
 
 In some enterprise or home private network environments, reverse DNS lookups may resolve a device's private IP to a hostname starting with `192`, `172`, or `10`. When this happens, the macOS terminal prompt changes from the normal `user@MacBook-Pro` to something like `user@192-168-1-100`, which can be distracting.

docs/en-gb/blog/contents/use-of-gravatar.md

@@ -3,6 +3,9 @@ title: Use Gravatar in First-party Systems
 tags:
   - gravatar
   - avatar
+author:
+  name: Zihlu Wang
+  email: real@zihluwang.me
 ---
 
 [Gravatar](https://gravatar.com) (Globally Recognised Avatar) is a service that associates avatar images with email