doc: add missing library name for valid zig code in the examples

src/root.zig

@@ -51,7 +51,7 @@ pub const Result = struct {
 /// function when applying to the heap sort algorithm of the standard library.
 ///
 /// ```zig
-/// var results: std.ArrayList(Result) = .empty;
+/// var results: std.ArrayList(fuzzig.Result) = .empty;
 /// // ..
 /// std.sort.heap(fuzzig.Result, results.items, {}, fuzzig.greaterThan);
 /// // act on sorted scores:
@@ -72,7 +72,7 @@ pub fn greaterThan(_: void, a: Result, b: Result) bool {
 /// Given a list of file names, you can match a given string as follows:
 ///
 /// ```zig
-/// var results: std.ArrayList(Result) = .empty;
+/// var results: std.ArrayList(fuzzig.Result) = .empty;
 /// defer {
 ///     for (results.items) |*result| result.deinit(gpa);
 ///     results.deinit(gpa);