diff --git a/11_Day/11_destructuring_and_spread.md b/11_Day/11_day_destructuring_and_spread.md
similarity index 99%
rename from 11_Day/11_destructuring_and_spread.md
rename to 11_Day/11_day_destructuring_and_spread.md
index 44bf4ff..60234bd 100644
--- a/11_Day/11_destructuring_and_spread.md
+++ b/11_Day/11_day_destructuring_and_spread.md
@@ -13,7 +13,7 @@
   </sub>
 </div>
 
-[<< Day 10](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/09_Day/09_day_Set_and_Map.md) | [Day 12>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/12_Day/12_day_regular_expressions.md)
+[<< Day 10](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/10_Day/10_day_Set_and_Map.md) | [Day 12>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/12_Day/12_day_regular_expressions.md)
 
 ![Day 11](../images/banners/day_1_11.png)
 
@@ -691,4 +691,4 @@ const users = [
 ```
 🎉 CONGRATULATIONS ! 🎉
 
-[<< Day 10](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/09_Day/09_day_Set_and_Map.md) | [Day 12>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/12_Day/12_day_regular_expressions.md)
\ No newline at end of file
+[<< Day 10](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/10_Day/10_day_Set_and_Map.md) | [Day 12>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/12_Day/12_day_regular_expressions.md)
\ No newline at end of file
diff --git a/12_Day/12_day_regular_expressions.md b/12_Day/12_day_regular_expressions.md
index 1bc243e..626acc5 100644
--- a/12_Day/12_day_regular_expressions.md
+++ b/12_Day/12_day_regular_expressions.md
@@ -515,9 +515,9 @@ distance = 12
     console.log(mostFrequentWords(cleanedText))
     [(3, 'I'), (2, 'teaching'), (2, 'teacher')]
     ```
-
+```
 
 🎉 CONGRATULATIONS ! 🎉
 
 
-[<< Day 11](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/11_Day/11_day_destructuring_and_spread.md) | [Day 13>>](#)
+[<< Day 11](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/11_Day/11_day_destructuring_and_spread.md) | [Day 13>>](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/13_Day/13_day_console_object_methods.md)
diff --git a/13_Day/13_day_console_object_methods.md b/13_Day/13_day_console_object_methods.md
index 5622a82..01af02b 100644
--- a/13_Day/13_day_console_object_methods.md
+++ b/13_Day/13_day_console_object_methods.md
@@ -13,7 +13,7 @@
   </sub>
 </div>
 
-[<< Day 11](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/12_Day/12_day_regular_expressions.md) | [Day 14>>](#)
+[<< Day 12](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/12_Day/12_day_regular_expressions.md) | [Day 14>>](#)
 
 ![Thirty Days Of JavaScript](../images/banners/day_1_13.png)
 - [Day 13](#day-13)
@@ -334,4 +334,4 @@ The console.clear() cleans the browser console.
 
 🎉 CONGRATULATIONS ! 🎉
 
-[<< Day 11](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/12_Day/12_day_regular_expressions.md) | [Day 14>>](#)
\ No newline at end of file
+[<< Day 12](https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/12_Day/12_day_regular_expressions.md) | [Day 14>>](#)
\ No newline at end of file