fix(plugin-eslint): omit empty docsUrl in audit metadata

Author: matejchalk

packages/plugin-eslint/src/lib/__snapshots__/eslint-plugin.spec.ts.snap

@@ -424,13 +424,11 @@ Custom options:
   ]
 }
 \`\`\`",
-      "docsUrl": "",
       "slug": "nx-enforce-module-boundaries-9dba9763586d15c6",
       "title": "Ensure that module boundaries are respected within the monorepo",
     },
     {
       "description": "ESLint rule **dependency-checks**, from _@nx_ plugin.",
-      "docsUrl": "",
       "slug": "nx-dependency-checks",
       "title": "Checks dependencies in project's package.json for version mismatches",
     },

packages/plugin-eslint/src/lib/meta/transform.ts

@@ -19,6 +19,8 @@ export function ruleToAudit({ ruleId, meta, options }: RuleData): Audit {
     slug: ruleIdToSlug(ruleId, options),
     title: meta.docs?.description ?? name,
     description: lines.join('\n\n'),
-    docsUrl: meta.docs?.url,
+    ...(meta.docs?.url && {
+      docsUrl: meta.docs.url,
+    }),
   };
 }