Fix typo in error message

sznqalibs/hoover.py

@@ -1219,7 +1219,7 @@ def jsDiff(dira, dirb, namea="A", nameb="B", chara="a", charb="b"):
                     buffb.append(line)
 
             else:
-                raise AssertionError("difflib.unified_diff emited"
+                raise AssertionError("difflib.unified_diff emitted"
                                      " unknown format (%s chars):\n%s"
                                      % (len(line), line))