fix typo following code review.

doc/extending/cop.txt

@@ -55,14 +55,14 @@ There are less methods to define for an Op than for a Type:
     .. method:: c_support_code()
 
       Allows you to specify helper functions/structs that the
-      :ref:`op` needs.  That code must be idem for each apply of the
-      node.  It will be inserted at global scope.
+      :ref:`op` needs.  That code will be reused for each apply of
+      this op. It will be inserted at global scope.
 
     .. method:: c_support_code_apply(node, name)
 
-      Allows you to specify helper functions/structs specialised for a
+      Allows you to specify helper functions/structs specialized for a
       particular apply of an :ref:`op`. Use `c_support_code` if the
-      code is the same for each apply of an node.
+      code is the same for each apply of an op.
       It will be inserted at global scope.
 
     .. method:: infer_shape(node, (i0_shapes,i1_shapes,...))
@@ -77,8 +77,8 @@ There are less methods to define for an Op than for a Type:
 
     .. method:: c_code_cache_version()
 
-       Should return a tuple of hashable object like interger. This
-       specify the version of the code. It is used to cache the
+       Should return a tuple of hashable objects like integers. This
+       specifies the version of the code. It is used to cache the
        compiled code. You MUST change the returned tuple for each
        change in the code. If you don't want to cache the compiled code
        return an empty tuple or don't implement it.

doc/extending/ctype.txt

@@ -97,13 +97,13 @@ the most important ones:
     .. method:: c_compiler()
 
         Allows to specify a special compiler. This will force this compiler
-	to all the compilation bloc(a particular op or the full graph).
+        for the current compilation block (a particular op or the full graph).
         This is used for the GPU code.
 
     .. method:: c_code_cache_version()
 
-       Should return a tuple of hashable object like interger. This
-       specify the version of the code. It is used to cache the
+       Should return a tuple of hashable objects like integers. This
+       specifies the version of the code. It is used to cache the
        compiled code. You MUST change the returned tuple for each
        change in the code. If you don't want to cache the compiled code
        return an empty tuple or don't implement it.