fix: missing commas

Author: monteiro-renato

docs/index.md

@@ -1634,12 +1634,12 @@ var _ = Describe("Math", func() {
     func(a, b, c int) {
       Expect(a+b).To(Equal(c))
     },
-    EntryDescription("%d + %d = %d")
+    EntryDescription("%d + %d = %d"),
     Entry(nil, 1, 2, 3),
     Entry(nil, -1, 2, 1),
     Entry("zeros", 0, 0, 0),
-    Entry(EntryDescription("%[3]d = %[1]d + %[2]d"), 10, 100, 110)
-    Entry(func(a, b, c int) string {return fmt.Sprintf("%d = %d", a + b, c)}, 4, 3, 7)
+    Entry(EntryDescription("%[3]d = %[1]d + %[2]d"), 10, 100, 110),
+    Entry(func(a, b, c int) string {return fmt.Sprintf("%d = %d", a + b, c)}, 4, 3, 7),
   )
 })
 ```