cosmetic: double space

Author: fiam

Dockerfile

@@ -1,7 +1,7 @@
 FROM rust:1.77 AS builder
 WORKDIR /src
 COPY . .
-RUN  --mount=type=cache,target=/usr/local/cargo/git \
+RUN --mount=type=cache,target=/usr/local/cargo/git \
     --mount=type=cache,target=/usr/local/cargo/registry \
     --mount=type=cache,sharing=private,target=/src/target \
     cargo install --path .