Limit architectures specified in example

Author: codysoyland

.github/workflows/e2e.yaml

@@ -63,7 +63,7 @@ jobs:
           if [ "${{matrix.cfg}}" == "melange.yaml" ]; then
             path="melange.yaml"
           fi
-          ./melange build $path --arch=x86_64 --namespace=wolfi
+          ./melange build $path --namespace=wolfi
 
       - name: Rebuild package
         run: |

examples/gnu-hello.yaml

@@ -3,6 +3,9 @@ package:
   version: 2.12
   epoch: 0
   description: "the GNU hello world program"
+  target-architecture:
+    - x86_64
+    - arm64
   copyright:
     - attestation: |
         Copyright 1992, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2005,