Restructure the Solution for 'Army of Functions' task and Fix Typos

Fix #2068 - Army of Functions
Fix #2070 - Typo
Fix #2056 - Grammatical Error
Fix #2074 - Remove semi-colon after function declaration

1-js/04-object-basics/04-object-methods/4-object-property-this/solution.md

@@ -7,7 +7,7 @@ function makeUser() {
     name: "John",
     ref: this
   };
-};
+}
 
 let user = makeUser();
 
@@ -45,7 +45,7 @@ function makeUser() {
     }
 */!*
   };
-};
+}
 
 let user = makeUser();
 

1-js/04-object-basics/04-object-methods/4-object-property-this/task.md

@@ -14,7 +14,7 @@ function makeUser() {
     name: "John",
     ref: this
   };
-};
+}
 
 let user = makeUser();