fix(ci): remove backslash continuation from login steps.

Author: librefos

.github/workflows/build.yml

@@ -13,8 +13,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Login to GHCR
-        run: echo "${{ secrets.GITHUB_TOKEN }}" | \
-          docker login ghcr.io -u ${{ github.actor }} --password-stdin
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
 
       - name: Compile LaTeX document
         run: |

.github/workflows/publish-image.yml

@@ -12,8 +12,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Login to GHCR
-        run: echo "${{ secrets.GITHUB_TOKEN }}" | \
-          docker login ghcr.io -u ${{ github.actor }} --password-stdin
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
 
       - name: Build and push
         run: |