varnamelen: explicit default values (golangci#2496)

Author: butuzov

.golangci.example.yml

@@ -1062,10 +1062,10 @@ linters-settings:
   varnamelen:
     # The longest distance, in source lines, that is being considered a "small scope." (defaults to 5)
     # Variables used in at most this many lines will be ignored.
-    max-distance: 5
+    max-distance: 6
     # The minimum length of a variable's name that is considered "long." (defaults to 3)
     # Variable names that are at least this long will be ignored.
-    min-name-length: 3
+    min-name-length: 2
     # Check method receiver names. (defaults to false)
     check-receiver: false
     # Check named return values. (defaults to false)

pkg/config/linters_settings.go

@@ -81,6 +81,10 @@ var defaultLintersSettings = LintersSettings{
 	Unparam: UnparamSettings{
 		Algo: "cha",
 	},
+	Varnamelen: VarnamelenSettings{
+		MaxDistance:   5,
+		MinNameLength: 3,
+	},
 	WSL: WSLSettings{
 		StrictAppend:                     true,
 		AllowAssignAndCallCuddle:         true,