Update the docs nav (#142)

Author: aboucaud

zensical.toml

@@ -19,12 +19,9 @@ nav = [
     {"Troubleshooting" = "user/troubleshooting.md"},
     {"Glossary" = "user/glossary.md"},
   ]},
-  {"Maintainer Docs" = [
+  {"Developer Corner" = [
+    {"Welcome" = "maintainer.md"},
     {"Architecture" = "architecture.md"},
-    {"Contributing" = [
-      {"Development Setup" = "contributing/setup.md"},
-      {"Testing" = "contributing/testing.md"},
-    ]},
     {"CLI Reference" = [
       {"Overview" = "cli/index.md"},
       {"lc init" = "cli/init.md"},
@@ -60,6 +57,10 @@ nav = [
       {"check-sentence-by-sentence" = "skills/check-sentence-by-sentence.md"},
       {"Authoring Skills" = "skills/authoring.md"},
     ]},
+    {"Contributing" = [
+      {"Development Setup" = "contributing/setup.md"},
+      {"Testing" = "contributing/testing.md"},
+    ]},
   ]},
   {"ASTRA docs" = "https://astra-spec.org/latest/"},
 ]