Fix missing word

src/ch07-00-modules.md

@@ -4,7 +4,7 @@ When you start writing programs in Rust, your code might live solely in the
 `main` function. As your code grows, you’ll eventually move functionality out
 into other functions, both for re-use and for better organization. By splitting
 your code up into smaller chunks, each chunk is easier to understand on its
-own. But what happens if find yourself with too many functions? Rust has a
+own. But what happens if you find yourself with too many functions? Rust has a
 module system that handles the problem of wanting to to re-use code while
 keeping your code organized.