fix typo

Author: achimcc

Dockerfile.compiler

@@ -10,7 +10,7 @@ RUN cargo contract new contract
 # Provide Cargo.toml with all ink! dependencies
 COPY crates/contract/Cargo.toml /builds/contract/Cargo.toml
 
-# Prebuild ink! dependencies
+# Pre-build ink! dependencies
 RUN cd contract && cargo contract build
 RUN cd contract && cargo test