docs: rename Troubleshooting page to Debugging

Update both the page heading and sidebar entry under Configuration.
URL/filename kept as troubleshooting to preserve existing links.

Author: claude

docs/.vitepress/config.mjs

@@ -192,7 +192,7 @@ export default defineConfig({
           { text: "Logout", link: "/configuration/logout" },
           { text: "UI5 Versions", link: "/configuration/ui5_versions" },
           { text: "Productive Usage", link: "/configuration/productive_usage" },
-          { text: "Troubleshooting", link: "/configuration/troubleshooting" },
+          { text: "Debugging", link: "/configuration/troubleshooting" },
           {
             text: "Installation",
             link: "/configuration/installation",

docs/configuration/troubleshooting.md

@@ -1,7 +1,7 @@
 ---
 outline: [2, 4]
 ---
-# Troubleshooting
+# Debugging
 Since all logic runs in ABAP, you can debug everything in the ABAP environment. Set an external breakpoint, because HTTP calls abap2UI5 apps externally.
 
 ### Backend