docs: remove duplicate word (#17483)

docs/docs/getting_started/installation.md

@@ -30,7 +30,7 @@ This is a starter bundle of packages, containing
 ### Important: OpenAI Environment Setup
 
 By default, we use the OpenAI `gpt-3.5-turbo` model for text generation and `text-embedding-ada-002` for retrieval and embeddings. In order to use this, you must have an OPENAI_API_KEY set up as an environment variable.
-You can obtain an API key by logging into your OpenAI account and [and creating a new API key](https://platform.openai.com/account/api-keys).
+You can obtain an API key by logging into your OpenAI account and [creating a new API key](https://platform.openai.com/account/api-keys).
 
 !!! tip
     You can also [use one of many other available LLMs](../module_guides/models/llms/usage_custom.md). You may need additional environment keys + tokens setup depending on the LLM provider.