Update docs associated with new UI (#4469)

docs/modules/usage/llms/azure-llms.md

@@ -5,7 +5,7 @@ OpenHands uses LiteLLM to make calls to Azure's chat models. You can find their
 ## Azure OpenAI Configuration
 
 When running OpenHands, you'll need to set the following environment variable using `-e` in the
-[docker run command](/modules/usage/installation):
+[docker run command](/modules/usage/installation#start-the-app):
 
 ```
 LLM_API_VERSION="<api-version>"              # e.g. "2023-05-15"
@@ -37,7 +37,7 @@ OpenHands uses llama-index for embeddings. You can find their documentation on A
 ### Azure OpenAI Configuration
 
 When running OpenHands, set the following environment variables using `-e` in the
-[docker run command](/modules/usage/installation):
+[docker run command](/modules/usage/installation#start-the-app):
 
 ```
 LLM_EMBEDDING_MODEL="azureopenai"

docs/modules/usage/llms/google-llms.md

@@ -16,7 +16,7 @@ If the model is not in the list, toggle `Advanced Options`, and enter it in `Cus
 ## VertexAI - Google Cloud Platform Configs
 
 To use Vertex AI through Google Cloud Platform when running OpenHands, you'll need to set the following environment
-variables using `-e` in the [docker run command](/modules/usage/installation):
+variables using `-e` in the [docker run command](/modules/usage/installation#start-the-app):
 
 ```
 GOOGLE_APPLICATION_CREDENTIALS="<json-dump-of-gcp-service-account-json>"

docs/modules/usage/llms/llms.md

@@ -48,7 +48,7 @@ The following can be set in the OpenHands UI through the Settings:
 - `Base URL` (through `Advanced Settings`)
 
 There are some settings that may be necessary for some LLMs/providers that cannot be set through the UI. Instead, these
-can be set through environment variables passed to the [docker run command](/modules/usage/installation)
+can be set through environment variables passed to the [docker run command](/modules/usage/installation#start-the-app)
 using `-e`:
 
 - `LLM_API_VERSION`