add /partials/containers/ codeowners

Author: KianNH

.github/CODEOWNERS

@@ -92,6 +92,7 @@
 # Developer Platform
 
 /src/content/docs/containers/ @mikenomitch @th0m @cloudflare/pcx-technical-writing @cloudflare/cloudchamber
+/src/content/partials/containers/ @mikenomitch @th0m @cloudflare/pcx-technical-writing @cloudflare/cloudchamber
 /src/content/docs/d1/ @elithrar @rozenmd @vy-ton @joshthoward @oxyjun @harshil1712 @cloudflare/pcx-technical-writing
 /src/content/release-notes/d1.yaml @elithrar @rozenmd @vy-ton @joshthoward @oxyjun @cloudflare/pcx-technical-writing
 /src/content/partials/d1/ @elithrar @rozenmd @vy-ton @joshthoward @oxyjun @harshil1712 @cloudflare/pcx-technical-writing