chore(manager/haskell-cabal): Add codeBlock import, real repo ref

Co-authored-by: Sebastian Poxhofer <secustor@users.noreply.github.com>

lib/modules/manager/haskell-cabal/index.spec.ts

@@ -1,6 +1,8 @@
+import { codeBlock } from 'common-tags';
 import { extractPackageFile, getRangeStrategy } from '.';
 
-const minimalCabalFile = `cabal-version: 3.4
+const minimalCabalFile = codeBlock`
+cabal-version: 3.4
 name: minimal
 version: 0.1.0.0
 

lib/modules/manager/haskell-cabal/index.ts

@@ -10,6 +10,9 @@ import type {
 import type { CabalDependency } from './extract';
 import { extractNamesAndRanges, findDepends } from './extract';
 
+// This manager has been tested on
+// https://github.com/ysangkok/haskell-tz
+
 export const defaultConfig = {
   fileMatch: ['\\.cabal$'],
   pinDigests: false,