Docs: correct example code in this-in-template (#178)

Author: privatenumber

docs/rules/this-in-template.md

@@ -38,7 +38,7 @@ Default is set to `never`.
 </template>
 ```
 
-:-1: Examples of **incorrect** code`:
+:-1: Examples of **incorrect** code:
 
 ```html
 <template>
@@ -50,22 +50,22 @@ Default is set to `never`.
 
 ### `"never"` - Never use expresions that contain `this` keyword in expressions
 
-:+1: Examples of **correct** code`:
+:+1: Examples of **correct** code:
 
 ```html
 <template>
-  <div :class="{'show': this.showFoo}">
-    {{ this.foo }}
+  <div :class="{'show': showFoo}">
+    {{ foo }}
   </div>
 </template>
 ```
 
-:-1: Examples of **incorrect** code`:
+:-1: Examples of **incorrect** code:
 
 ```html
 <template>
-  <div :class="{'show': showFoo}">
-    {{ foo }}
+  <div :class="{'show': this.showFoo}">
+    {{ this.foo }}
   </div>
 </template>
 ```