Fix static category (#2320)

* Pelican is a static site generator

* Octopress is a static website generator

src/apps.json

@@ -6643,8 +6643,7 @@
     },
     "Octopress": {
       "cats": [
-        1,
+        57
-        11
       ],
       "html": "Powered by <a href=\"http://octopress\\.org\">",
       "icon": "octopress.png",
@@ -7081,7 +7080,7 @@
     },
     "Pelican": {
       "cats": [
-        1
+        57
       ],
       "implies": "Python",
       "icon": "pelican.png",