Update prefer-correct-switch-length max length to 20

Author: tenhobi

packages/netglade_analysis/CHANGELOG.md

@@ -13,6 +13,7 @@
   - Add prefer-private-extension-type-field
   - Add avoid-missing-controller
   - Add avoid-unnecessary-gesture-detector
+- Update prefer-correct-switch-length max-length to 20
 
 ## 8.0.0
 - Adhere to DCM 1.14.0:

packages/netglade_analysis/lib/dcm.yaml

@@ -236,7 +236,8 @@ dart_code_metrics:
     # - prefer-correct-json-casts # overkill
     - prefer-correct-setter-parameter-name
     - prefer-correct-stream-return-type
-    - prefer-correct-switch-length
+    - prefer-correct-switch-length:
+        max-length: 20 # default value 10 is sometimes way too much
     - prefer-correct-test-file-name
     - prefer-correct-type-name
     - prefer-declaring-const-constructor