docs: update quickstart navigation references

Replace experiments_quickstart.md references with quickstart.md across navigation:
- Update homepage link to quickstart.md
- Update getstarted/index.md to reference quickstart.md
- Update experimentation.md reference to quickstart guide
- Remove experiments_quickstart from mkdocs.yml nav

The experiments_quickstart.md file is preserved but no longer in navigation.

Author: sanjeed5

docs/concepts/experimentation.md

@@ -36,7 +36,7 @@ graph LR
 
 ## Creating Experiments with Ragas
 
-Ragas provides an `@experiment` decorator to streamline the experiment creation process. If you prefer a hands-on intro first, see [Run your first experiment](../getstarted/experiments_quickstart.md).
+Ragas provides an `@experiment` decorator to streamline the experiment creation process. If you prefer a hands-on intro first, see the [Quick Start guide](../getstarted/quickstart.md).
 
 ### Basic Experiment Structure
 

docs/getstarted/index.md

@@ -13,7 +13,7 @@ If you have any questions about Ragas, feel free to join our [Discord community]
 
 Start here to get up and running with Ragas in minutes:
 
-- [Run your first experiment](experiments_quickstart.md) 
+- [Quick Start: Get Running in 5 Minutes](./quickstart.md) 
 
 ## Tutorials
 

docs/index.md

@@ -19,7 +19,7 @@ Traditional evaluation metrics don't capture what matters for LLM applications.
 
     Start evaluating in 5 minutes with our quickstart guide.
 
-    [:octicons-arrow-right-24: Get Started](getstarted/experiments_quickstart.md)
+    [:octicons-arrow-right-24: Get Started](getstarted/quickstart.md)
 
 - 📚 **Core Concepts**
 

mkdocs.yml

@@ -13,7 +13,6 @@ nav:
       - getstarted/index.md
       - Quick Start: getstarted/quickstart.md
       - Installation: getstarted/install.md
-      - Run your first experiment: getstarted/experiments_quickstart.md
       - Tutorials:
           - Evaluate a prompt: tutorials/prompt.md
           - Evaluate a simple RAG system: tutorials/rag.md