fix(onboarding): remove superfluous <br /> (#29685)

lib/workers/repository/onboarding/pr/pr-list.spec.ts

@@ -133,7 +133,7 @@ describe('workers/repository/onboarding/pr/pr-list', () => {
 
         </details>
 
-        <br />
+
 
         🚸 Branch creation will be limited to maximum 1 per hour, so it doesn't swamp any CI resources or overwhelm the project. See docs for \`prhourlylimit\` for details.
 

lib/workers/repository/onboarding/pr/pr-list.ts

@@ -70,7 +70,7 @@ export function getPrList(
     prHourlyLimit < branches.length
   ) {
     prDesc += emojify(
-      `<br />\n\n:children_crossing: Branch creation will be limited to maximum ${prHourlyLimit} per hour, so it doesn't swamp any CI resources or overwhelm the project. See docs for \`prhourlylimit\` for details.\n\n`,
+      `\n\n:children_crossing: Branch creation will be limited to maximum ${prHourlyLimit} per hour, so it doesn't swamp any CI resources or overwhelm the project. See docs for \`prhourlylimit\` for details.\n\n`,
     );
   }
   return prDesc;