MAINT: Fix misspelling in workflow file

Author: bluss

.github/workflows/ci.yml

@@ -49,7 +49,7 @@ jobs:
         with:
           profile: minimal
           toolchain: ${{ matrix.rust }}
-          taret: ${{ matrix.target }}
+          target: ${{ matrix.target }}
           override: true
       - name: Cache cargo plugins
         uses: actions/cache@v1