Merge pull request #6 from screwdriver-cd/typo

fix: Small jsdoc fixes

lib/hasJoin.js

@@ -1,13 +1,13 @@
 'use strict';
 
 /**
- * Calculate if the workflow contains a cycle, e.g. A -> B -> A
- * @method hasCycle
+ * Check if the workflow has a join, e.g. A + B -> C
+ * @method hasJoin
  * @param  {Object}  workflowGraph  Graph representation of workflow
  * @return {Boolean}                True if a cycle exists anywhere in the workflow
  */
 const hasJoin = workflowGraph =>
-    // Check from all the nodes to capture deteached workflows
+    // Check from all the nodes to capture detached workflows
     workflowGraph.edges.some(edge => edge.join);
 
 module.exports = hasJoin;