Fix description to clarify what COOP stands for.

core/audits/origin-isolation.js

@@ -12,7 +12,7 @@ const UIStrings = {
   /** Title of a Lighthouse audit that evaluates the security of a page's COOP header for origin isolation. "COOP" stands for "Cross-Origin-Opener-Policy". */
   title: 'Ensure proper origin isolation with COOP',
   /** Description of a Lighthouse audit that evaluates the security of a page's COOP header for origin isolation. This is displayed after a user expands the section to see more. No character length limits. The last sentence starting with 'Learn' becomes link text to additional documentation. "COOP" stands for "Cross-Origin-Opener-Policy". */
-  description: 'Deployment of the COOP header allows isolation of the top-level document to not share a browsing context group with cross-origin documents. ' +
+  description: 'Deployment of the Cross-Origin-Opener-Policy (COOP) header allows isolation of the top-level document to not share a browsing context group with cross-origin documents. ' +
     '[Learn what the COOP header is and how it should be deployed.](https://web.dev/articles/why-coop-coep#coop)',
   /** Summary text for the results of a Lighthouse audit that evaluates the COOP header for origin isolation. This is displayed if no COOP header is deployed. "COOP" stands for "Cross-Origin-Opener-Policy". */
   noCoop: 'No COOP header found',

core/test/fixtures/user-flows/reports/sample-flow-result.json

@@ -2154,8 +2154,8 @@
           },
           "origin-isolation": {
             "id": "origin-isolation",
-            "title": "Ensure the proper usage of the COOP header to isolate the origin.",
-            "description": "Deployment of the COOP header allows isolation of the top-level document to not share a browsing context group with cross-origin documents. [Learn what the COOP header is and how it should be deployed.](https://web.dev/articles/why-coop-coep#coop)",
+            "title": "Ensure proper origin isolation with COOP",
+            "description": "Deployment of the Cross-Origin-Opener-Policy (COOP) header allows isolation of the top-level document to not share a browsing context group with cross-origin documents. [Learn what the COOP header is and how it should be deployed.](https://web.dev/articles/why-coop-coep#coop)",
             "score": 1,
             "scoreDisplayMode": "informative",
             "details": {
@@ -20012,8 +20012,8 @@
           },
           "origin-isolation": {
             "id": "origin-isolation",
-            "title": "Ensure the proper usage of the COOP header to isolate the origin.",
-            "description": "Deployment of the COOP header allows isolation of the top-level document to not share a browsing context group with cross-origin documents. [Learn what the COOP header is and how it should be deployed.](https://web.dev/articles/why-coop-coep#coop)",
+            "title": "Ensure proper origin isolation with COOP",
+            "description": "Deployment of the Cross-Origin-Opener-Policy (COOP) header allows isolation of the top-level document to not share a browsing context group with cross-origin documents. [Learn what the COOP header is and how it should be deployed.](https://web.dev/articles/why-coop-coep#coop)",
             "score": 1,
             "scoreDisplayMode": "informative",
             "details": {

core/test/results/sample_v2.json

@@ -2809,8 +2809,8 @@
     },
     "origin-isolation": {
       "id": "origin-isolation",
-      "title": "Ensure the proper usage of the COOP header to isolate the origin.",
-      "description": "Deployment of the COOP header allows isolation of the top-level document to not share a browsing context group with cross-origin documents. [Learn what the COOP header is and how it should be deployed.](https://web.dev/articles/why-coop-coep#coop)",
+      "title": "Ensure proper origin isolation with COOP",
+      "description": "Deployment of the Cross-Origin-Opener-Policy (COOP) header allows isolation of the top-level document to not share a browsing context group with cross-origin documents. [Learn what the COOP header is and how it should be deployed.](https://web.dev/articles/why-coop-coep#coop)",
       "score": 1,
       "scoreDisplayMode": "informative",
       "details": {