fixes #759

hello-world.md

@@ -316,6 +316,8 @@ For helper functions, it's a good idea to accept a `testing.TB` which is an inte
 
 `t.Helper()` is needed to tell the test suite that this method is a helper. By doing this, when it fails, the line number reported will be in our _function call_ rather than inside our test helper. This will help other developers track down problems more easily. If you still don't understand, comment it out, make a test fail and observe the test output. Comments in Go are a great way to add additional information to your code, or in this case, a quick way to tell the compiler to ignore a line. You can comment out the `t.Helper()` code by adding two forward slashes `//` at the beginning of the line. You should see that line turn grey or change to another color than the rest of your code to indicate it's now commented out.
 
+When you have more than one argument of the same type \(in our case two strings\) rather than having `(got string, want string)` you can shorten it to `(got, want string)`.
+
 ### Back to source control
 
 Now that we are happy with the code, I would amend the previous commit so that we only check in the lovely version of our code with its test.

integers.md

@@ -63,9 +63,9 @@ func Add(x, y int) int {
 }
 ```
 
-When you have more than one argument of the same type \(in our case two integers\) rather than having `(x int, y int)` you can shorten it to `(x, y int)`.
+Remember, when you have more than one argument of the same type \(in our case two integers\) rather than having `(x int, y int)` you can shorten it to `(x, y int)`.
 
-Now run the tests and we should be happy that the test is correctly reporting what is wrong.
+Now run the tests, and we should be happy that the test is correctly reporting what is wrong.
 
 `adder_test.go:10: expected '4' but got '0'`
 

maps.md

@@ -595,7 +595,7 @@ func TestDelete(t *testing.T) {
 	dictionary.Delete(word)
 
 	_, err := dictionary.Search(word)
-    assertError(t, word, ErrNotFound)
+	assertError(t, word, ErrNotFound)
 }
 ```