fix: add some spacing between operation description and parameters

src/components/Operation/Operation.tsx

@@ -16,6 +16,7 @@ import { ResponsesList } from '../Responses/ResponsesList';
 import { ResponseSamples } from '../ResponseSamples/ResponseSamples';
 
 import { OperationModel as OperationType } from '../../services/models';
+import styled from '../../styled-components';
 
 const OperationRow = Row.extend`
   backface-visibility: hidden;
@@ -34,6 +35,10 @@ const OperationRow = Row.extend`
   }
 `;
 
+const Description = styled(Markdown)`
+  margin-bottom: ${({ theme }) => theme.spacing.unit * 8};
+`;
+
 export interface OperationProps {
   operation: OperationType;
 }
@@ -54,7 +59,7 @@ export class Operation extends React.Component<OperationProps> {
                 {summary} {deprecated && <Badge type="warning"> Deprecated </Badge>}
               </H2>
               {options.pathInMiddlePanel && <Endpoint operation={operation} inverted={true} />}
-              {description !== undefined && <Markdown source={description} />}
+              {description !== undefined && <Description source={description} />}
               <SecurityRequirements securities={operation.security} />
               <Parameters parameters={operation.parameters} body={operation.requestBody} />
               <ResponsesList responses={operation.responses} />