Complete strings section

exercises/strings/strings1.rs

@@ -7,7 +7,7 @@ fn main() {
 }
 
 fn current_favorite_color() -> String {
-    "blue"
+    String::from("blue")
 }
 
 

exercises/strings/strings2.rs

@@ -3,7 +3,7 @@
 
 fn main() {
     let word = String::from("green"); // Try not changing this line :)
-    if is_a_color_word(word) {
+    if is_a_color_word(&word) {
         println!("That is a color word I know!");
     } else {
         println!("That is not a color word I know.");