Fix links on Languages & Frameworks (#875)

- Fix links on Languages & Frameworks
- Add Deno to Languages & Frameworks 
- Add Deno on the docs navigation

Co-authored-by: George Tsiolis <[email protected]>

Author: fknipp

src/docs/languages-and-frameworks.md

@@ -19,5 +19,6 @@ Below is a list of language and framework specific tips & tricks.
 - [Julia](/docs/languages/julia/)
 - [LaTeX](/docs/languages/latex/)
 - [R](/docs/languages/r/)
-- [Kotlin](/docs/kotlin-in-gitpod/)
-- [Pandas](/docs/frameworks/pandas/)
+- [Kotlin](/docs/languages/kotlin)
+- [Pandas](/docs/languages/python/#pandas)
+- [Deno](/docs/languages/deno)

src/docs/menu.ts

@@ -237,7 +237,15 @@ export const MENU: MenuEntry[] = [
             M(
                 "Kotlin",
                 "languages/kotlin"
-            )
+            ),
+            M(
+                "Pandas",
+                "languages/python/#pandas"
+            ),
+            M(
+                "Deno",
+                "languages/deno"
+            ),
         ]
     ),
     M(