Update build.rs comment to refer to strip_prefix

build.rs

@@ -35,7 +35,7 @@ fn main() {
 
  if compiler < 45 {
  // String::strip_prefix.
- // https://doc.rust-lang.org/std/primitive.str.html#method.repeat
+ // https://doc.rust-lang.org/std/primitive.str.html#method.strip_prefix
  println!("cargo:rustc-cfg=no_str_strip_prefix");
  }