docs: cleaning (#5413)

# docs cleaning

Changed docs to consistent format (probably, we need an official doc
integration template):
- ClearML - added product descriptions; changed title/headers
- Rebuff  - added product descriptions; changed title/headers
- WhyLabs  - added product descriptions; changed title/headers
- Docugami - changed title/headers/structure
- Airbyte - fixed title
- Wolfram Alpha - added descriptions, fixed title
- OpenWeatherMap -  - added product descriptions; changed title/headers
- Unstructured - changed description

## Who can review?

Community members can review the PR once tests pass. Tag
maintainers/contributors who might be interested:

@hwchase17
@dev2049

docs/integrations/openweathermap.md

@@ -1,11 +1,21 @@
-# OpenWeatherMap API
+# OpenWeatherMap
 
-This page covers how to use the OpenWeatherMap API within LangChain.
-It is broken into two parts: installation and setup, and then references to specific OpenWeatherMap API wrappers.
+>[OpenWeatherMap](https://openweathermap.org/api/) provides all essential weather data for a specific location:
+>- Current weather
+>- Minute forecast for 1 hour
+>- Hourly forecast for 48 hours
+>- Daily forecast for 8 days
+>- National weather alerts
+>- Historical weather data for 40+ years back
+
+This page covers how to use the `OpenWeatherMap API` within LangChain.
 
 ## Installation and Setup
 
-- Install requirements with `pip install pyowm`
+- Install requirements with
+```bash
+pip install pyowm
+```
 - Go to OpenWeatherMap and sign up for an account to get your API key [here](https://openweathermap.org/api/)
 - Set your API key as `OPENWEATHERMAP_API_KEY` environment variable