fix: typo in Dockerfile comment

Dockerfile

@@ -40,7 +40,7 @@ RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
 RUN wasm-pack --version
 
 # Pre-build all cargo dependencies. Because cargo doesn't have a build option
-# to build only the dependecies, we pretend that our project is a simple, empty
+# to build only the dependencies, we pretend that our project is a simple, empty
 # `lib.rs`. When we COPY the actual files we make sure to `touch` lib.rs so
 # that cargo knows to rebuild it with the new content.
 COPY Cargo.lock .