update insertion_sort

snippets/is_lower_case.md

@@ -1,16 +1,16 @@
-### is_lower_case
-
-Checks if a string is lower case.
-
-Convert the given string to lower case, using `str.lower()` method and compare it to the original.
-
-```python
-def is_lower_case(str):
-    return str == str.lower()
-```
-
-```python
-is_lower_case('abc') # True
-is_lower_case('a3@$') # True
-is_lower_case('Ab4') # False
+### is_lower_case
+
+Checks if a string is lower case.
+
+Convert the given string to lower case, using `str.lower()` method and compare it to the original.
+
+```python
+def is_lower_case(str):
+    return str == str.lower()
+```
+
+```python
+is_lower_case('abc') # True
+is_lower_case('a3@$') # True
+is_lower_case('Ab4') # False
 ```