Fixed minor typos

OmkarPathak · OmkarPathak · commit 830db4a16262 · 2017-08-08T07:34:33.000+05:30
diff --git a/pygorithm/data_structures/linked_list.py b/pygorithm/data_structures/linked_list.py
@@ -1,5 +1,5 @@
 # Author: OMKAR PATHAK
-# Created On: 5th August July 2017
+# Created On: 5th August 2017
 
 # Linked List and Node can be accomodated in separate classes for convenience
 
diff --git a/pygorithm/data_structures/queue.py b/pygorithm/data_structures/queue.py
@@ -1,5 +1,5 @@
 # Author: OMKAR PATHAK
-# Created On: 3rd August July 2017
+# Created On: 3rd August 2017
 
 # queue implementation
 class Queue(object):
diff --git a/pygorithm/data_structures/stack.py b/pygorithm/data_structures/stack.py
@@ -1,5 +1,5 @@
 # Author: OMKAR PATHAK
-# Created On: 3rd August July 2017
+# Created On: 3rd August 2017
 
 # stack implementation
 class Stack(object):
@@ -86,7 +86,7 @@ def _precedence(self, char):
         else:
             return -1
 
-    # function to convert infix to postfix 
+    # function to convert infix to postfix
     def infix_to_postfix(self):
         postFix = []
         for i in range(len(self.myExp)):
