Comment out multilang from docs if it's far far distant plan

[goyalyashpal]

3. [SALT]: Are you sure about the planned "multilanguage support"?
   This will make docs etc a lot more involved and require lots of redundant/repeated work.
4. [CNTD]: If yes, then some way to compile to different targets seems worth trying.
   See shen Yggdrasil - it will cover python, C/C++, JVM (java vm), JS (JavaScript), & Lisp in one go.

Re: "multilanguage support" - that was the "grand" idea
currently it's unreachable goal
adopting Flet for a different language is like starting all over again
- Originally posted by @FeodorFitsner in #141 (comment)

• that's understandable, but the source doesn't reflect it. that's why i got confused.
• i mean sure, i understand that it was a pre-paration & hint for anticipation.
• but if it's far far distant, i don't think this should be featured so prominently even in docs like it's there already.
  just mention at one prominent place that such feature (here, multilang) may come in future.

Sources:

1. Flet homepage
   

   website/src/pages/index.js

   Lines 54 to 62 in c5ab4c4

   	{
   	title: <>Speaks your language</>,
   	imageUrl: 'img/pages/home/feature-language.svg',
   	description: (
   	<>
   	Flet is language-agnostic, so anyone on your team could develop Flet apps in their favorite language. <a href="/docs/guides/python/getting-started">Python</a> is already supported, Go, C# and others are <a href="/roadmap">coming next</a>.
   	</>
   	),
   	},

2. Flet Introduction
   

   website/docs/introduction.md

   Line 90 in c5ab4c4

   Want to learn how to build a real app? Jump to a getting started guide for your language:

3. Tutorials Picker
   

   website/sidebars.js

   Lines 64 to 67 in c5ab4c4

   	type: "generated-index",
   	description:
   	"Flet apps can be created in multiple languages. Follow a getting-started guide below for your language.",
   	slug: "/tutorials",

4. Tutorials Trello Clone
   

   website/docs/tutorials/trello-clone.md

   Line 14 in c5ab4c4

   ## Why Flet?

[FeodorFitsner]

We are working on docs update and it will be fixed. Thanks for bringing attention to that!