Nest "Concepts" group in "Get Started" group

This bumps up the "Protocol" group in the sidebar such that it appears
above the fold.

Author: jonathanhefner

docs/docs.json

@@ -33,6 +33,18 @@
                   "quickstart/user"
                 ]
               },
+              {
+                "group": "Concepts",
+                "pages": [
+                  "docs/concepts/architecture",
+                  "docs/concepts/resources",
+                  "docs/concepts/prompts",
+                  "docs/concepts/tools",
+                  "docs/concepts/sampling",
+                  "docs/concepts/roots",
+                  "docs/concepts/transports"
+                ]
+              },
               {
                 "group": "Examples",
                 "pages": [
@@ -51,18 +63,6 @@
               "faqs"
             ]
           },
-          {
-            "group": "Concepts",
-            "pages": [
-              "docs/concepts/architecture",
-              "docs/concepts/resources",
-              "docs/concepts/prompts",
-              "docs/concepts/tools",
-              "docs/concepts/sampling",
-              "docs/concepts/roots",
-              "docs/concepts/transports"
-            ]
-          },
           {
             "group": "Protocol",
             "pages": [
@@ -149,6 +149,18 @@
                   "quickstart/user"
                 ]
               },
+              {
+                "group": "Concepts",
+                "pages": [
+                  "docs/concepts/architecture",
+                  "docs/concepts/resources",
+                  "docs/concepts/prompts",
+                  "docs/concepts/tools",
+                  "docs/concepts/sampling",
+                  "docs/concepts/roots",
+                  "docs/concepts/transports"
+                ]
+              },
               {
                 "group": "Examples",
                 "pages": [
@@ -167,18 +179,6 @@
               "faqs"
             ]
           },
-          {
-            "group": "Concepts",
-            "pages": [
-              "docs/concepts/architecture",
-              "docs/concepts/resources",
-              "docs/concepts/prompts",
-              "docs/concepts/tools",
-              "docs/concepts/sampling",
-              "docs/concepts/roots",
-              "docs/concepts/transports"
-            ]
-          },
           {
             "group": "Protocol",
             "pages": [
@@ -264,6 +264,18 @@
                   "quickstart/user"
                 ]
               },
+              {
+                "group": "Concepts",
+                "pages": [
+                  "docs/concepts/architecture",
+                  "docs/concepts/resources",
+                  "docs/concepts/prompts",
+                  "docs/concepts/tools",
+                  "docs/concepts/sampling",
+                  "docs/concepts/roots",
+                  "docs/concepts/transports"
+                ]
+              },
               {
                 "group": "Examples",
                 "pages": [
@@ -282,18 +294,6 @@
               "faqs"
             ]
           },
-          {
-            "group": "Concepts",
-            "pages": [
-              "docs/concepts/architecture",
-              "docs/concepts/resources",
-              "docs/concepts/prompts",
-              "docs/concepts/tools",
-              "docs/concepts/sampling",
-              "docs/concepts/roots",
-              "docs/concepts/transports"
-            ]
-          },
           {
             "group": "Protocol",
             "pages": [