Change UwU by UnU (#507)

As we are delivering bad news

Author: daveflr

docs/essential/validation.md

@@ -753,15 +753,15 @@ All members must be a string
 t.Object({
     x: t.Number()
 }, {
-    error: 'Invalid object UwU'
+    error: 'Invalid object UnU'
 })
 ```
 
 </td>
 <td>
 
 ```
-Invalid object UwU
+Invalid object UnU
 ```
 
 </td>
@@ -829,15 +829,15 @@ Invalid Email :(
 t.Object({
     x: t.Number()
 }, {
-    error: 'Invalid object UwU'
+    error: 'Invalid object UnU'
 })
 ```
 
 </td>
 <td>
 
 ```
-Invalid object UwU
+Invalid object UnU
 ```
 
 </td>