docs: Fedora 43 updated installation instruction (#27)

Author: VaibhavPrakash0503

README.MD

@@ -211,6 +211,21 @@ gpgkey=https://minecraft-linux.github.io/pkg/deb/pubkey.gpg
 EOF
 ```
 
+### 43 (x86_64 / arm64)
+```
+sudo tee /etc/yum.repos.d/minecraft-linux-pkg.repo << 'EOL'
+[minecraft-linux-pkg]
+name=minecraft-linux-pkg
+baseurl=https://minecraft-linux.github.io/pkg/fedora-43
+enabled=1
+countme=1
+repo_gpgcheck=0
+type=rpm
+gpgcheck=1
+skip_if_unavailable=False
+gpgkey=https://minecraft-linux.github.io/pkg/deb/pubkey.gpg
+EOL
+```
 ## Nightly
 
 ### 38 (x86_64 / arm64)