Fix how-to docs on adding the default TechDocs collator.

Signed-off-by: Eric Peterson <ericpeterson@spotify.com>

docs/features/search/how-to-guides.md

@@ -67,11 +67,24 @@ getting started guide.
 import { DefaultTechDocsCollatorFactory } from '@backstage/plugin-techdocs-backend';
 ```
 
-2. Register the `DefaultTechDocsCollatorFactory` with the IndexBuilder.
+2. If there isn't an existing schedule you'd like to run the collator on, be
+   sure to create it first. Something like...
+
+```typescript
+import { Duration } from 'luxon';
+
+const every10MinutesSchedule = env.scheduler.createScheduledTaskRunner({
+  frequency: Duration.fromObject({ seconds: 600 }),
+  timeout: Duration.fromObject({ seconds: 900 }),
+  initialDelay: Duration.fromObject({ seconds: 3 }),
+});
+```
+
+3. Register the `DefaultTechDocsCollatorFactory` with the IndexBuilder.
 
 ```typescript
 indexBuilder.addCollator({
-  defaultRefreshIntervalSeconds: 600,
+  schedule: every10MinutesSchedule,
   factory: DefaultTechDocsCollatorFactory.fromConfig(env.config, {
     discovery: env.discovery,
     logger: env.logger,