fix: correct bash script formatting and improve clarity for WASM build process

Author: Yashodeeps

#!/bin/bash

@@ -1,8 +1,13 @@
-
+#!/bin/bash
+# Install Rust
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
-. $HOME/.cargo/env
+source "$HOME/.cargo/env"
+# Add WASM target
 rustup target add wasm32-unknown-unknown
+# Install wasm-pack
 curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+# Build WASM module
 wasm-pack build --target web
+# Copy to public directory
 mkdir -p public/pkg
 cp -r pkg/* public/pkg/