ci(prettier): correct prettier code formatting in docs/index.md (#655)

Author: Michael Buchar

docs/index.md

@@ -12,8 +12,8 @@
 ## REST API
 
 The REANA-Workflow-Controller component offers a REST API for managing
-workflows. [Detailed REST API documentation can be found
-here]("_static/api.html").
+workflows.
+[Detailed REST API documentation can be found here]("_static/api.html").
 
 ```{eval-rst}
 .. automodule:: reana_workflow_controller.rest.workflows