Fix spelling and update OpenSign API documentation

Corrected the spelling of 'developer' in the API documentation and removed the auto mocking server entry.

Author: prafull-opensignlabs

docs/docs/API-docs/v1.1/opensign.yaml

@@ -4,7 +4,7 @@ info:
   description: |
     Welcome to the **OpenSign™ API v1.1** documentation.
 
-    Our powerful and flexible API empowers you to seamlessly integrate digital signing capabilities into your applications. Whether you're a devloper automating document workflows, a business enhancing security, or an enterprise streamlining contract management, OpenSign™ delivers robust solutions tailored to your needs.
+    Our powerful and flexible API empowers you to seamlessly integrate digital signing capabilities into your applications. Whether you're a developer automating document workflows, a business enhancing security, or an enterprise streamlining contract management, OpenSign™ delivers robust solutions tailored to your needs.
 
     Explore our comprehensive guides, code samples, and best practices to unlock the full potential of OpenSign™ and transform your digital document processes.
 
@@ -31,9 +31,6 @@ externalDocs:
   description: Find out more about OpenSign
   url: http://docs.opensignlabs.com
 servers:
-# Added by API Auto Mocking Plugin
-- description: SwaggerHub API Auto Mocking
-  url: https://virtserver.swaggerhub.com/PrafullNavkar/open/1.0.0
 - url: https://sandbox.opensignlabs.com/api/v1.1
 - url: https://app.opensignlabs.com/api/v1.1
 - url: https://eu-app.opensignlabs.com/api/v1.1