Fix typo in install.md for repositories section

[krishzzi]

🐞 Fix Typo in Installation Instructions

Description:
Fixed a typo in the Gradle configuration example in docs/install.md.
The word epositories was missing the initial r, which would cause build errors when copying the snippet.

Before:

allprojects {
    epositories {
        maven { url 'https://jitpack.io' }
    }
}
After:

gradle
Copy code
allprojects {
    repositories {
        maven { url 'https://jitpack.io' }
    }
}
Why this change:
Corrects a documentation typo to ensure users can copy-paste the code without encountering Gradle syntax errors.