🪪mkdocs: social cards (#1428)

* mkdocs plugins: add plugin for social cards and plugin that allow to exclude a folder

* docs: fix hyperlinks

* mkdocs: social cards (descriptions) for 'contributions' and 'deployment' guides

* mkdocs: social cards (descriptions) for all 'index.md'

* mkdocs: social cards (descriptions) for 'features' and 'plugins'

* mkdocs: social cards (descriptions) for 'general_info'

* mkdocs: social cards (descriptions) for 'configuration'

* mkdocs: social cards (descriptions) for 'installation'

* mkdocs: minor fixes

* update librechat.svg

* update how_to_contribute.md

add reference to the official GitHub documentation

docs/features/plugins/introduction.md

@@ -1,5 +1,6 @@
 ---
 title: 🔌 Introduction
+description: This doc introduces the plugins endpoint, which enables you to use different LLMs and tools with more flexibility and control. You can change your settings and plugins on the fly, and use plugins to access various sources of information and assistance.
 weight: -10
 ---
 # Plugins Endpoint
@@ -9,7 +10,7 @@ weight: -10
 
 The plugins endpoint opens the door to prompting LLMs in new ways other than traditional input/output prompting.
 
-The first step is using chain-of-thought prompting & ["agency"](https://zapier.com/blog/ai-agent/) for using plugins/tools in a fashion mimicing the official ChatGPT Plugins feature.
+The first step is using chain-of-thought prompting & **["agency"](https://zapier.com/blog/ai-agent/)** for using plugins/tools in a fashion mimicing the official ChatGPT Plugins feature.
 
 More than this, you can use this endpoint for changing your conversation settings mid-conversation. Unlike the official ChatGPT site and all other endpoints, you can switch models, presets, and settings mid-convo, even when you have no plugins selected. This is useful if you first want a creative response from GPT-4, and then a deterministic, lower cost response from GPT-3. Soon, you will be able to use Google, HuggingFace, local models, all in this or a similar endpoint in the same modular manner.
 
@@ -52,8 +53,8 @@ Clicking on **"Show Agent Settings"** will allow you to modify parameters for th
 - **[Stable Diffusion](./stable_diffusion.md)**
 - **[Wolfram](./wolfram.md)**
 - **DALL-E** - same setup as above, you just need an OpenAI key, and it's made distinct from your main API key to make Chats but it can be the same one
-- **Zapier** - You need a Zapier account. Get your [API key from here](https://nla.zapier.com/credentials/) after you've made an account
-  - Create allowed actions - Follow step 3 in this [getting start guide](https://nla.zapier.com/start/) from Zapier
+- **Zapier** - You need a Zapier account. Get your **[API key from here](https://nla.zapier.com/credentials/)** after you've made an account
+  - Create allowed actions - Follow step 3 in this **[Start Here guide](https://nla.zapier.com/start/)** from Zapier
     - ⚠️ NOTE: zapier is known to be finicky with certain actions. I found that writing email drafts is probably the best use of it
     -  there are improvements that can be made to override the official NLA integration and that is TBD
 - **Browser/Scraper** - This is not to be confused with 'browsing' on chat.openai.com (which is technically a plugin suite or multiple plugins)
@@ -62,7 +63,7 @@ Clicking on **"Show Agent Settings"** will allow you to modify parameters for th
   - A better solution for 'browsing' is planned but can't guarantuee when
   - This plugin is best used in combination with google so it doesn't hallucinate webpages to visit
 - **Serpapi** - an alternative to Google search but not as performant in my opinion
-  - You can get an API key here: https://serpapi.com/dashboard
+  - You can get an API key here: **[https://serpapi.com/dashboard](https://serpapi.com/dashboard)**
   - For free tier, you are limited to 100 queries/month
   - With google, you are limited to 100/day for free, which is a better deal, and any after may cost you a few pennies