Fix test_build_js tests

Looks like many of the lines dropped a "--" at the end of them. This
looks largely cosmetic, so I'm just going to update the expected strings
in the tests to match.

Author: willkg

tests/test_build_js/test_build_js.py

@@ -49,7 +49,7 @@ def test_autofunction_callback(self):
         """Make sure @callback uses can be documented with autofunction."""
         self._file_contents_eq(
             'autofunction_callback',
-            u'requestCallback(responseCode)\n\n   Some global callback\n\n   Arguments:\n      * **responseCode** (*number*) --\n')
+            'requestCallback(responseCode)\n\n   Some global callback\n\n   Arguments:\n      * **responseCode** (*number*)\n')
 
     def test_autofunction_example(self):
         """Make sure @example tags can be documented with autofunction."""
@@ -68,10 +68,10 @@ def test_autofunction_destructured_params(self):
             'autofunction_destructured_params',
             u'destructuredParams(p1, p2)\n\n'
             '   Arguments:\n'
-            '      * **p1** (*number*) --\n\n'
-            '      * **p2** (*Object*) --\n\n'
-            '      * **p2.foo** (*string*) --\n\n'
-            '      * **p2.bar** (*string*) --\n')
+            '      * **p1** (*number*)\n\n'
+            '      * **p2** (*Object*)\n\n'
+            '      * **p2.foo** (*string*)\n\n'
+            '      * **p2.bar** (*string*)\n')
 
     def test_autofunction_defaults_in_doclet(self):
         """Make sure param default values appear in the function definition,
@@ -80,9 +80,9 @@ def test_autofunction_defaults_in_doclet(self):
             'autofunction_defaults_doclet',
             'defaultsDocumentedInDoclet(func=() => 5, str="a string with \\" quote", strNum="42", strBool="true", num=5, nil=null)\n\n'
             '   Arguments:\n'
-            '      * **func** (*function*) --\n\n'
-            '      * **strNum** (*string*) --\n\n'
-            '      * **strBool** (*string*) --\n')
+            '      * **func** (*function*)\n\n'
+            '      * **strNum** (*string*)\n\n'
+            '      * **strBool** (*string*)\n')
 
     def test_autofunction_defaults_in_code(self):
         """Make sure param default values appear in the function definition,
@@ -357,7 +357,7 @@ def test_union_types(self):
         switched from " | " as the union separator back to "|".
 
         """
-        assert '* **fnodeA** (*Node|Fnode*) --' in self._file_contents('union')
+        assert '* **fnodeA** (*Node|Fnode*)' in self._file_contents('union')
 
     def test_field_list_unwrapping(self):
         """Ensure the tails of field lists have line breaks and leading