fix default of shift param

nextflow_schema.json

@@ -330,7 +330,7 @@
                 "shift_reads": {
                     "type": "boolean",
                     "fa_icon": "fas fa-chart-area",
-                    "default": true,
+                    "default": false,
                     "help_text": "Shift aligned reads as commonly done for ATACseq, +4bp for reads on the + strand, -5 bp for reads on the - strand. This can only be applied if all samples are paired-end.",
                     "description": "Shift aligned reads (+4bp and -5bp)."
                 }