change kewords to keywords

fix typo

for/readme.md

@@ -1,6 +1,6 @@
 # Iteration
 
-To do stuff repeatedly in Go, you'll need `for`. In go there are no `while`, `do`, `until` kewords, you can only use `for`. Which is a good thing!
+To do stuff repeatedly in Go, you'll need `for`. In go there are no `while`, `do`, `until` keywords, you can only use `for`. Which is a good thing!
 
 Let's write a test for a function that repeats a character 5 times.
 
@@ -119,4 +119,4 @@ What that means is our function takes 136 nanoseconds to run (on my computer). W
 
 - More TDD practice
 - Learned `for`.
-- Learned how to write benchmarks
+- Learned how to write benchmarks