Fix whitespace in prose.js

prose/prose.js

@@ -20,7 +20,8 @@ class ProseMirrorView {
             state: EditorState.create({
                 doc: defaultMarkdownParser.parse(content),
                 plugins: exampleSetup({schema})
-			}), dispatchTransaction(transaction) {
+            }),
+            dispatchTransaction(transaction) {
                 document.querySelector('#content').value = defaultMarkdownSerializer.serialize(transaction.doc)
                 let newState = this.state.apply(transaction)
                 this.updateState(newState)