diff --git a/tools/doc/json.mjs b/tools/doc/json.mjs
index 1d2eab2e3cf466..b9cbc5b2b5c111 100644
--- a/tools/doc/json.mjs
+++ b/tools/doc/json.mjs
@@ -104,10 +104,10 @@ export function jsonAPI({ filename }) {
           nodes.slice(0, i).every((node) => node.type === 'list')
         ) {
           const text = textJoin(node.children[0].children, file);
-          const stability = text.match(stabilityExpr);
+          const stability = stabilityExpr.exec(text);
           if (stability) {
             current.stability = parseInt(stability[1], 10);
-            current.stabilityText = stability[2].trim();
+            current.stabilityText = stability[2].replaceAll('\n', ' ').trim();
             delete nodes[i];
           }
         }
diff --git a/tools/doc/stability.mjs b/tools/doc/stability.mjs
index 479269df43925c..aa1ccc827fae4f 100644
--- a/tools/doc/stability.mjs
+++ b/tools/doc/stability.mjs
@@ -30,12 +30,17 @@ function collectStability(data) {
     if (mod.displayName && mod.stability >= 0) {
       const link = mod.source.replace('doc/api/', '').replace('.md', '.html');
 
+      let { stabilityText } = mod;
+      if (stabilityText.includes('. ')) {
+        stabilityText = stabilityText.slice(0, stabilityText.indexOf('.'));
+      }
+
       stability.push({
         api: mod.name,
         displayName: mod.textRaw,
         link: link,
         stability: mod.stability,
-        stabilityText: `(${mod.stability}) ${mod.stabilityText}`,
+        stabilityText: `(${mod.stability}) ${stabilityText}`,
       });
     }
   }