Update 12_day_regular_expressions.md

fix links

12_Day_Regular_expressions/12_day_regular_expressions.md

@@ -501,11 +501,12 @@ distance = 12
 
 1. Writ a function which cleans text. Clean the following text. After cleaning, count three most frequent words in the string.
   
-  ```js
+   ```js
-    sentence = `%I $am@% a %tea@cher%, &and& I lo%#ve %tea@ching%;. There $is nothing; &as& mo@re rewarding as educa@ting &and& @emp%o@wering peo@ple. ;I found tea@ching m%o@re interesting tha@n any other %jo@bs. %Do@es thi%s mo@tivate yo@u to be a tea@cher!?`
+   sentence = `%I $am@% a %tea@cher%, &and& I lo%#ve %tea@ching%;. There $is nothing; &as& mo@re rewarding as educa@ting &and& @emp%o@wering peo@ple. ;I found tea@ching m%o@re interesting tha@n any other %jo@bs. %Do@es thi%s mo@tivate yo@u to be a tea@cher!?`
 
    console.log(cleanText(sentence))
    ```
+   
 
    ```sh
     I am a teacher and I love teaching There is nothing as more rewarding as educating and empowering people I found teaching more interesting than any other jobs Does this motivate you to be a teacher