zpl fix follow-up

fixed formatting

Author: lite1979

sample.html

@@ -948,11 +948,11 @@ <h4 class="panel-title">Options</h4>
             '^XA\n',
             '^FO50,100',
             { type: 'raw', format: 'image', data: 'assets/img/image_sample_bw.png', options: { language: 'ZPLII' } },
-			'^FS\n',
-			'^FO50,300^ADN,36,20^FDPRINTED USING^FS\n',
-			'^FO50,350^ADN,36,20^FDQZ-TRAY ^FS\n', 
-			'^FO50,400^ADN,36,20^FDVERSION ' + qzVersion + '^FS\n' + '\n' ,
-			'^XZ\n'
+	    '^FS\n',
+	    '^FO50,300^ADN,36,20^FDPRINTED USING^FS\n',
+	    '^FO50,350^ADN,36,20^FDQZ-TRAY ^FS\n', 
+	    '^FO50,400^ADN,36,20^FDVERSION ' + qzVersion + '^FS\n' + '\n',
+	    '^XZ\n'
         ];
 
         qz.print(config, printData).catch(displayError);