python: Inline expectation should have space after $

This was a regex-find-replace from `# \$(?! )` (using a negative lookahead) to `# $ `.

python/ql/test/query-tests/Variables/capture/test.py

@@ -2,12 +2,12 @@
 def bad1():
     results = []
     for x in range(10):
-        def inner(): # $capturedVar=x
+        def inner(): # $ capturedVar=x
             return x
         results.append(inner)
     return results
 
-a = [lambda: i for i in range(1, 4)] # $capturedVar=i
+a = [lambda: i for i in range(1, 4)] # $ capturedVar=i
 for f in a:
     print(f())
 
@@ -46,30 +46,30 @@ def ok1():
         result += inner()
     return result
 
-b = [lambda: i for i in range(1, 4) for j in range(1,5)] # $capturedVar=i
-c = [lambda: j for i in range(1, 4) for j in range(1,5)] # $capturedVar=j
+b = [lambda: i for i in range(1, 4) for j in range(1,5)] # $ capturedVar=i
+c = [lambda: j for i in range(1, 4) for j in range(1,5)] # $ capturedVar=j
 
-s = {lambda: i for i in range(1, 4)} # $capturedVar=i
+s = {lambda: i for i in range(1, 4)} # $ capturedVar=i
 for f in s:
     print(f())
 
-d = {i:lambda: i for i in range(1, 4)} # $capturedVar=i
+d = {i:lambda: i for i in range(1, 4)} # $ capturedVar=i
 for k, f in d.items():
     print(k, f())
 
-#Generator expressions are sometimes OK, if they evaluate the iteration 
+#Generator expressions are sometimes OK, if they evaluate the iteration
 #When the captured variable is used.
 #So technically this is a false positive, but it is extremely fragile
 #code, so I (Mark) think it is fine to report it as a violation.
-g = (lambda: i for i in range(1, 4)) # $capturedVar=i
+g = (lambda: i for i in range(1, 4)) # $ capturedVar=i
 for f in g:
     print(f())
 
 #But not if evaluated eagerly
-l = list(lambda: i for i in range(1, 4)) # $capturedVar=i
+l = list(lambda: i for i in range(1, 4)) # $ capturedVar=i
 for f in l:
     print(f())
 
 # This result is MISSING since the lambda is not detected to escape the loop
 def odasa4860(asset_ids):
-    return dict((asset_id, filter(lambda c : c.asset_id == asset_id, xxx)) for asset_id in asset_ids) # $MISSING: capturedVar=asset_id
+    return dict((asset_id, filter(lambda c : c.asset_id == asset_id, xxx)) for asset_id in asset_ids) # $ MISSING: capturedVar=asset_id