minor fixes

1-js/01-getting-started/04-variables/1-hello-variables/1/solution.js

@@ -0,0 +1,2 @@
+let admin;
+let user;

1-js/01-getting-started/04-variables/1-hello-variables/1/task.md

@@ -0,0 +1,4 @@
+
+# Working with variables
+
+Declare two variables: `admin` and `user`.

1-js/01-getting-started/04-variables/1-hello-variables/1/test.js

@@ -0,0 +1,9 @@
+describe("Test", function() {
+  it("declares `admin`", function() {
+    admin; // error if not declared
+  });
+
+  it("declares `user`", function() {
+    user; // error if not declared
+  });
+});