Refactor error message and pattern validation in schema_input.json for improved clarity

Author: glichtenstein

assets/schema_input.json

@@ -26,15 +26,8 @@
                 "type": "string",
                 "format": "file-path",
                 "exists": true,
-                "errorMessage": "GZIP-compressed FastQ file for reads 2 cannot contain spaces and must have extension '.fq.gz' or '.fastq.gz'",
-                "anyOf": [
-                    {
-                        "pattern": "^\\S+\\.f(ast)?q\\.gz$"
-                    },
-                    {
-                        "maxLength": 0
-                    }
-                ]
+                "pattern": "^\\S+\\.f(ast)?q\\.gz$",
+                "errorMessage": "GZIP-compressed FastQ file for reads 2 cannot contain spaces and must have extension '.fq.gz' or '.fastq.gz'"
             },
             "strandedness": {
                 "type": "string",