Fix code style

Author: ssssank

README.md

@@ -14,16 +14,12 @@ pip install hexlet-pairs
 
 <!-- This code will be doctested. Do not touch the markup! -->
 
-    >>> from hexlet import pairs
-    >>> p = pairs.cons(42, 'foo')
-    >>> pairs.is_pair(p)
-    True
-    >>> pairs.car(p)
-    42
-    >>> pairs.cdr(p)
-    'foo'
-    >>> print(pairs.to_string(p))
-    cons(42, 'foo')
+    from hexlet import pairs
+    p = pairs.cons(42, 'foo')
+    pairs.is_pair(p)  # True
+    pairs.car(p)  # 42
+    pairs.cdr(p)  # 'foo'
+    print(pairs.to_string(p))  # (42, 'foo')
 
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