chore: rename severity option

Author: ldez

Diff for: .golangci.next.reference.yml

@@ -4236,7 +4236,7 @@ severity:
   # `@linter` can be used as severity value to keep the severity from linters (e.g. revive, gosec, ...)
   #
   # Default: ""
-  default-severity: error
+  default: error
 
   # If set to true `severity-rules` regular expressions become case-sensitive.
   # Default: false

Diff for: jsonschema/golangci.next.jsonschema.json

@@ -4417,7 +4417,7 @@
       "type": "object",
       "additionalProperties": false,
       "properties": {
-        "default-severity": {
+        "default": {
           "description": "Set the default severity for issues. If severity rules are defined and the issues do not match or no severity is provided to the rule this will be the default severity applied. Severities should match the supported severity names of the selected out format.",
           "type": "string",
           "default": ""
@@ -4468,7 +4468,7 @@
           "default": []
         }
       },
-      "required": ["default-severity"]
+      "required": ["default"]
     }
   }
 }

Diff for: pkg/config/severity.go

@@ -8,7 +8,7 @@ import (
 const severityRuleMinConditionsCount = 1
 
 type Severity struct {
-	Default       string         `mapstructure:"default-severity"`
+	Default       string         `mapstructure:"default"`
 	CaseSensitive bool           `mapstructure:"case-sensitive"`
 	Rules         []SeverityRule `mapstructure:"rules"`
 }