fix spelling

maintainers/scripts/dep-licenses.sh

@@ -17,7 +17,7 @@ trap "exitHandler" EXIT
 # fetch the trace and the drvPath of the attribute.
 nix-instantiate $NIXPKGS -A $attr --show-trace > "$tmp/drvPath" 2> "$tmp/trace" || {
   cat 1>&2 - "$tmp/trace" <<EOF
-An error occured while evaluating $attr.
+An error occurred while evaluating $attr.
 EOF
   exit 1
 }

nixos/modules/installer/tools/nixos-rebuild.sh

@@ -235,7 +235,7 @@ fi
 # default and/or activate it now.
 if [ "$action" = switch -o "$action" = boot -o "$action" = test -o "$action" = dry-activate ]; then
     if ! $pathToConfig/bin/switch-to-configuration "$action"; then
-        echo "warning: error(s) occured while switching to the new configuration" >&2
+        echo "warning: error(s) occurred while switching to the new configuration" >&2
         exit 1
     fi
 fi