fix typo

Author: antoinerg

src/traces/sankey/calc.js

@@ -62,7 +62,7 @@ function convertToD3Sankey(trace) {
     // Process links
     var groupedLinks = {
         source: [],
-        target: []
+        target: []
     };
     for(i = 0; i < linkSpec.value.length; i++) {
         var val = linkSpec.value[i];

test/jasmine/tests/sankey_test.js

@@ -493,12 +493,12 @@ describe('sankey tests', function() {
               .then(function() {
                   expect(gd.calcdata[0][0].circular).toBe(false);
 
-                  // Group two nodes to create circularity
+                  // Group two nodes that creates a circularity
                   return Plotly.restyle(gd, 'node.groups', [[[1, 3]]]);
               })
               .then(function() {
                   expect(gd.calcdata[0][0].circular).toBe(true);
-                  // Group two nodes to that do not create circularity
+                  // Group two nodes that do not create a circularity
                   return Plotly.restyle(gd, 'node.groups', [[[1, 4]]]);
               })
               .then(function() {