followup on 2399 (#2400)

- Repair syntax for redirects
- Remove now extraneous redirect

Author: ewdurbin

config/nginx.conf

@@ -50,10 +50,6 @@ http {
                   return 301 http://www.python.org/psf;
                 }
 
-                location /psf/codeofconduct {
-                  return 301 /psf/conduct;
-                }
-
                 location /topics/xml {
                   return 301 http://pyxml.sourceforge.net/topics;
                 }
@@ -314,19 +310,19 @@ http {
                   return 301 https://python.org/blogs/;
                 }
 
-                location ^/psf/archive/codeofconduct/?$ {
+                location ~ ^/psf/archive/codeofconduct/?$ {
                     return 302 https://policies.python.org/python.org/code-of-conduct/;
                 }
-                location ^/psf/codeofconduct/?$ {
+                location ~ ^/psf/codeofconduct/?$ {
                     return 302 https://policies.python.org/python.org/code-of-conduct/;
                 }
-                location ^/psf/conduct/?$ {
+                location ~ ^/psf/conduct/?$ {
                     return 302 https://policies.python.org/python.org/code-of-conduct/;
                 }
-                location ^/psf/conduct/enforcement/?$ {
+                location ~ ^/psf/conduct/enforcement/?$ {
                     return 302 https://policies.python.org/python.org/code-of-conduct/Enforcement-Procedures/;
                 }
-                location ^/psf/conduct/reporting/?$ {
+                location ~ ^/psf/conduct/reporting/?$ {
                     return 302 https://policies.python.org/python.org/code-of-conduct/Procedures-for-Reporting-Incidents/;
                 }