Update README.md after review

Co-authored-by: Pascal Christoph <[email protected]>

README.md

@@ -148,7 +148,7 @@ Run workflows on the web server, passing `data`, `flux`, and `fix` as GET-Parame
 
 ## Use Metafacture Playground API
 
-Beside the web application the Metafacture Playground provides a HTTP REST API to process workflows.To process a workflow you need to provide the workflow information as JSON parameters in your POST request.
+Beside the web application the Metafacture Playground provides a HTTP API to process workflows. All you need is to provide the workflow information as JSON parameters in your POST request.
 
 ```
 curl -X POST https://test.metafacture.org/playground/process -H 'Content-Type: application/json' -d '{"data":"1{a: Faust, b {n: Goethe, v: JW}, c: Weimar}\n2{a: Räuber, b {n: Schiller, v: F}, c: Weimar}","flux":"inputFile\n|open-file\n|as-lines\n|decode-formeta\n|fix(transformationFile)\n|encode-xml(rootTag=\"collection\")\n|print\n;","transformation":"move_field(_id, id)\nmove_field(a, title)\npaste(author, b.v, b.n, \"~aus\", c)\nretain(id, title,