Update deepMapKeys.md

snippets/deepMapKeys.md

@@ -4,7 +4,8 @@ Deep maps an object keys.
 
 Creates an object with the same values as the provided object and keys generated by running the provided function for each key.
 
-Use Object.keys(obj) to iterate over the object's keys. Use Array.prototype.reduce() to create a new object with the same values and mapped keys using fn.
+Use `Object.keys(obj)` to iterate over the object's keys. 
+Use `Array.prototype.reduce()` to create a new object with the same values and mapped keys using `fn`.
 
 ```js
 const deepMapKeys = (obj, f) => (
@@ -23,37 +24,31 @@ const deepMapKeys = (obj, f) => (
 ```
 
 ```js
-'use strict';
 const obj = {
-   foo:'1',
-   isnull:null,
-   nested:{
-      bar:'1',
-      child:{
-         withArray:[
-            {
-               grandChild:[ 'hello' ]
-            }
-         ]
-      }
-   }
-}
+  foo:'1',
+  nested:{
+    child:{
+      withArray:[
+        {
+          grandChild:[ 'hello' ]
+        }
+      ]
+    }
+  }
+};
 const upperKeysObj = deepMapKeys(obj, (key) => key.toUpperCase());
 /*
-Formatted JSON Data
 {
-   "FOO":"1",
-   "ISNULL":null,
-   "NESTED":{
-      "BAR":"1",
-      "CHILD":{
-         "WITHARRAY":[
-            {
-               "GRANDCHILD":[ 'hello' ]
-            }
-         ]
-      }
-   }
+  "FOO":"1",
+  "NESTED":{
+    "CHILD":{
+      "WITHARRAY":[
+        {
+          "GRANDCHILD":[ 'hello' ]
+        }
+      ]
+    }
+  }
 }
 */
 ```