Fix workflow YAML formatting

Author: Saul-STFC

.github/workflows/pr_security-checks.yml

@@ -27,7 +27,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install rust toolchain
-        run: | 
+        run: |
             rustup toolchain install "${RUST_TOOLCHAIN_VERSION}"
             rustup default "${RUST_TOOLCHAIN_VERSION}"
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
@@ -53,7 +53,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install rust toolchain
-        run: | 
+        run: |
             rustup toolchain install "${RUST_TOOLCHAIN_VERSION}"
             rustup default "${RUST_TOOLCHAIN_VERSION}"
       - uses: EmbarkStudios/cargo-deny-action@3fd3802e88374d3fe9159b834c7714ec57d6c979 # v2.0.15

.github/workflows/publish-docs.yml

@@ -27,7 +27,7 @@ jobs:
           persist-credentials: false
 
       - name: Install rust toolchain
-        run: | 
+        run: |
             rustup toolchain install "${RUST_TOOLCHAIN_VERSION}"
             rustup default "${RUST_TOOLCHAIN_VERSION}"