Fix typo; ref #239.

CHANGES.txt

@@ -2,6 +2,12 @@
 CHANGES
 =======
 
+-----
+5.5.1
+-----
+
+* Issue #239: Fix typo in 5.5 such that fix did not take.
+
 ---
 5.5
 ---

setup.py

@@ -144,7 +144,7 @@ setup_params = dict(
             "extras_require         = setuptools.dist:check_extras",
             "install_requires       = setuptools.dist:check_requirements",
             "tests_require          = setuptools.dist:check_requirements",
-            "setup_reqires          = setuptools.dist:check_requirements",
+            "setup_requires         = setuptools.dist:check_requirements",
             "entry_points           = setuptools.dist:check_entry_points",
             "test_suite             = setuptools.dist:check_test_suite",
             "zip_safe               = setuptools.dist:assert_bool",