pep8 and readme fix

I think this should fix the pep8 issues and I added the readme file link

Author: MrWeast

README.md

@@ -2230,7 +2230,7 @@ In order to achieve greater coverage and encourage more people to contribute to
                 </a>
             </td>
             <td> <!-- Python -->
-                <a href="./CONTRIBUTING.md">
+                <a href="./src/python/unordered_linked_list.py">
                     <img align="center" height="25" src="./logos/github.svg" />
                 </a>
             </td>

src/python/unordered_linked_list.py

@@ -22,15 +22,17 @@ class Unordered_Linked_List:
     def __init__(self) -> None:
         self.first_node = None
 
-    def insert(self,value): # inserts a new node with the given value
+    def insert(self,value):
+        # inserts a new node with the given value
         if self.first_node is None:
             self.first_node = Node(value)
         else:
             tmp = Node(value)
             tmp.next = self.first_node
             self.first_node = tmp
 
-    def find(self,value): # returns true if the specified value is in your list
+    def find(self,value):
+        # returns true if the specified value is in your list
         ptr = self.first_node
         while ptr is not None:
             if ptr.value == value:
@@ -51,7 +53,8 @@ def size(self): # returns size of the list
         print(f'Your list is of size {i}')
         return i
 
-    def remove(self,value): # removes all instances of a given value
+    def remove(self,value):
+        # removes all instances of a given value
         ptr = self.first_node
         prev = None
         while ptr is not None: