Added matplotlib_installation.md file and updated the index.md

contrib/plotting-visualization/index.md

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 # List of sections
 
-- [Section title](filename.md)
+- [Installing Matplotlib](matplotlib_installation.md)

contrib/plotting-visualization/matplotlib_installation.md

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+# Matplotlib Installation
+
+Matplotlib is a widely used Python library for creating static, animated, and interactive visualizations. It can be installed using `pip`, Python's package manager.
+
+## Prerequisites
+
+Before installing Matplotlib, ensure you have Python installed on your system. You can download and install Python from the [official Python website](https://www.python.org/).
+
+## Installation Steps
+
+1. **Install Matplotlib**: Open your terminal or command prompt and run the following command to install Matplotlib using `pip`:
+
+```bash
+pip install matplotlib
+```
+
+2. **Verify Installation**: After installation, you can verify if Matplotlib is installed correctly by importing it in a Python environment:
+
+```python
+import matplotlib
+
+print(matplotlib.__version__)
+
+
+```