Merge pull request #404 from xring/web_search_serpapi_doc

feat: add doc for search web via SerpApi && update enable_web_search.…

docs/tutorials/web-search/serpapi.md

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+---
+sidebar_position: 15
+title: "SerpApi"
+---
+
+:::warning
+This tutorial is a community contribution and is not supported by the Open WebUI team. It serves only as a demonstration on how to customize Open WebUI for your specific use case. Want to contribute? Check out the contributing tutorial.
+:::
+
+## SerpApi API
+
+[SerpApi](https://serpapi.com/) Scrape Google and other search engines from our fast, easy, and complete API. Any existing or upcoming SERP engine that returns `organic_results` is supported. The default web search engine is `google`, but it can be changed to `bing`, `baidu`, `google_news`, `google_scholar`, `google_patents`, and others.
+
+### Setup
+
+1. Go to [SerpApi](https://serpapi.com/), and log on or create a new account.
+2. Go to `Dashboard` and copy the API key.
+3. With `API key`, open `Open WebUI Admin panel` and click `Settings` tab, and then click `Web Search`.
+4. Enable `Web search` and set `Web Search Engine` to `serpapi`.
+5. Fill `SerpApi API Key` with the `API key` that you copied in step 2 from [SerpApi](https://serpapi.com/) dashboard.
+6. [Optional] Enter the `SerpApi engine` name you want to query. Example, `google`, `bing`, `baidu`, `google_news`, `google_videos`, `google_scholar` and `google_patents.` By default, it is set to `google`. Find more options at [SerpApi documentation](https://serpapi.com/dashboard).
+7. Click `Save`.
+
+![Open WebUI Admin panel](/images/tutorial_serpapi_search.png)
+
+#### Note
+
+You have to enable `Web search` in the prompt field to search the web using [SerpApi](https://serpapi.com/) engines.
+
+![enable Web search](/images/enable_web_search.png)