feat: remove collections to hashmaps

info.toml

@@ -445,11 +445,11 @@ UNIX_EPOCH and SystemTime are declared in the std::time module. Add a use statem
 for these two to bring them into scope. You can use nested paths or the glob
 operator to bring these two in using only one line."""
 
-# COLLECTIONS
+# HASHMAPS
 
 [[exercises]]
-name = "hashmap1"
-path = "exercises/collections/hashmap1.rs"
+name = "hashmaps1"
+path = "exercises/hashmaps/hashmaps1.rs"
 mode = "test"
 hint = """
 Hint 1: Take a look at the return type of the function to figure out
@@ -459,8 +459,8 @@ Hint 2: Number of fruits should be at least 5. And you have to put
 """
 
 [[exercises]]
-name = "hashmap2"
-path = "exercises/collections/hashmap2.rs"
+name = "hashmaps2"
+path = "exercises/hashmaps/hashmaps2.rs"
 mode = "test"
 hint = """
 Use the `entry()` and `or_insert()` methods of `HashMap` to achieve this.