Update Instrument Table of Contents

Added: Violin 1 (Solo), Violin 2 (Solo), Violins 1, Violas, Violins 2

instruments.md

@@ -157,12 +157,25 @@
 - [Xylophone](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Xylophone)
   - [Xylophone.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Xylophone/Xylophone.sts.7z)
 
+## Muse String
+
+- [Violins 2](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Violins-2)
+  - [Violins_2.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Violins-2/Violins_2.sts.7z)
+
 ## Muse Strings
 
 - [Contrabasses](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Contrabasses)
   - [Contrabasses.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Contrabasses/Contrabasses.sts.7z)
 - [Viola (Solo)](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Viola-(Solo))
   - [Viola_Solo.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Viola-%28Solo%29/Viola_Solo.sts.7z)
+- [Violas](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Violas)
+  - [Violas.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Violas/Violas.sts.7z)
+- [Violin 1 (Solo)](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Violin-1-(Solo))
+  - [Violin_1_Solo.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Violin-1-%28Solo%29/Violin_1_Solo.sts.7z)
+- [Violin 2 (Solo)](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Violin-2-(Solo))
+  - [Violin_2_Solo.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Violin-2-%28Solo%29/Violin_2_Solo.sts.7z)
+- [Violins 1](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Violins-1)
+  - [Violins_1.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Violins-1/Violins_1.sts.7z)
 - [Violoncello (Solo)](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Violoncello-(Solo))
   - [Cello_Solo.sts.7z](https://github.com/CarlGao4/Muse-Sounds/releases/download/Violoncello-%28Solo%29/Cello_Solo.sts.7z)
 - [Violoncellos](https://github.com/CarlGao4/Muse-Sounds/releases/tag/Violoncellos)