Update activation fields in system prompts to include singular and plural forms

Author: pelikhan

docs/src/content/docs/reference/scripts/system.mdx

@@ -821,7 +821,7 @@ system({
     description:
         "GitHub Actions workflows support annotations ([Read more...](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-error-message)).",
     lineNumbers: true,
-    activation: ["annotations", "warnings", "errors"],
+    activation: ["annotation", "annotations", "warnings", "errors"],
 })
 
 export default function (ctx: ChatGenerationContext) {
@@ -3991,6 +3991,7 @@ system({
   title: "Read resource content from a URL using MCP resource resolution",
   description:
     "Provides a tool that can read and return the content of resources from URLs using the host's resolveResource function. Supports various protocols including https, file, git, gist, and vscode.",
+  activation: ["resource", "resources"],
 });
 
 export default function (ctx: ChatGenerationContext) {