Fix qldoc errors + typos

Author: joefarebrother

python/ql/src/Classes/Comparisons/EqualsOrNotEquals.qhelp

@@ -14,10 +14,12 @@ then the <code>!=</code> operator will automatically delegate to the <code>__eq_
  <p>However, if the <code>__ne__</code> method is defined without a corresponding <code>__eq__</code> method, 
  the <code>==</code> operator will still default to object identity (equivalent to the <code>is</code> operator), while the <code>!=</code>
  operator will use the <code>__ne__</code> method, which may be inconsistent.
+ </p>
 
-<p>Additionally, if the <code>__ne__</code> method is defined on a superclass, and the subclass defines its own <cde>__eq__</code> method without overriding
+<p>Additionally, if the <code>__ne__</code> method is defined on a superclass, and the subclass defines its own <code>__eq__</code> method without overriding
 the superclass <code>__ne__</code> method, the <code>!=</code> operator will use this superclass <code>__ne__</code> method, rather than automatically delegating
 to <code>__eq__</code>, which may be incorrect.
+</p>
 
 </overview>
 <recommendation>

python/ql/src/Classes/Comparisons/examples/EqualsOrNotEquals2.py

@@ -10,7 +10,7 @@ def __ne__(self, other):
 
 class C(B):
     def __init__(self, b, c):
-        super().init(b)
+        super().__init__(b)
         self.c = c 
 
     # BAD: eq is defined, but != will use superclass ne method, which is not consistent

python/ql/src/Classes/Comparisons/examples/IncompleteOrdering.py

@@ -2,7 +2,7 @@ class A:
     def __init__(self, i):
         self.i = i
 
-    # BAD: le is not defined, so `A(1) <= A(2) would result in an error.`
+    # BAD: le is not defined, so `A(1) <= A(2)` would result in an error.
     def __lt__(self, other):
         return self.i < other.i
 

python/ql/test/query-tests/Classes/equals-hash/equalsHash.py

@@ -2,7 +2,7 @@ class A:
     def __eq__(self, other):
         return True 
 
-    def __hash__(self, other):
+    def __hash__(self):
         return 7 
 
 # B is automatically non-hashable - so eq without hash never needs to alert