Fixed minor typo.

ambaxter · ambaxter · commit d99bbe9b1015 · 2017-10-01T12:20:16.000-04:00
diff --git a/book/src/using-bitfields.md b/book/src/using-bitfields.md
@@ -133,7 +133,7 @@ fn walk_bitfield() {
 }
 ```
 
-This produces identical results in for C's print function:
+This produces identical results in C's print function:
 
 ```text
 Print C walk

Original file line number	Diff line number	Diff line change
`@@ -133,7 +133,7 @@ fn walk_bitfield() {`
`133`	`133`	`}`
`134`	`134`	```
`135`	`135`
`136`		`-This produces identical results in for C's print function:`
	`136`	`+This produces identical results in C's print function:`
`137`	`137`
`138`	`138`	```text
`139`	`139`	`Print C walk`