fix(docs-infra): fix filtering in run-example-e2e.js (angular#28663)

PR Close angular#28663

Author: kapunahelewong

aio/tools/examples/run-example-e2e.js

@@ -325,7 +325,7 @@ function getE2eSpecs(basePath, filter) {
 // Find all e2e specs in a given example folder.
 function getE2eSpecsFor(basePath, specFile, filter) {
   // Only get spec file at the example root.
-  const e2eSpecGlob = `${filter ? '*' + filter + '*' : '*'}/${specFile}`;
+  const e2eSpecGlob = `${filter ? `*${filter}*` : '*'}/${specFile}`;
   return globby(e2eSpecGlob, {cwd: basePath, nodir: true})
       .then(
           paths => paths.filter(file => !IGNORED_EXAMPLES.some(ignored => file.startsWith(ignored)))