Fix typo in blueprints/public/schema-readme.md (#1134)

> rollyps

to: "rollups"

## What is this PR doing?

Docs only change

## What problem is it solving?

A (presumably) mistyped word.

## How is the problem addressed?

Using the correct spelling

## Testing Instructions

n/a

packages/playground/blueprints/public/schema-readme.md

@@ -5,5 +5,5 @@ Whenever the types are modified, the schema needs to be rebuilt using
 `nx build playground-blueprints` and then committed to the repository.
 
 Unfortunately, it is not auto-rebuilt in `npm run dev` mode as the
-`dts-bundle-generator` utility we use for type rollyps does not support
+`dts-bundle-generator` utility we use for type rollups does not support
 watching for changes.