reorg guides

Author: jlowin

docs/mint.json

@@ -52,16 +52,16 @@
             ]
         },
         {
-            "group": "Reference",
+            "group": "Guides",
             "pages": [
-                "reference/task-class",
-                "reference/task-decorator"
+                "guides/subtasks"
             ]
         },
         {
-            "group": "Guides",
+            "group": "Reference",
             "pages": [
-                "guides/subtasks"
+                "reference/task-class",
+                "reference/task-decorator"
             ]
         },
         {
@@ -95,10 +95,6 @@
         }
     ],
     "tabs": [
-        {
-            "name": "Guides",
-            "url": "guides"
-        },
         {
             "name": "Glossary",
             "url": "glossary"