chore: tweak link check workflow and renovate config

Signed-off-by: Devin Buhl <devin@buhl.casa>

.github/renovate/commitMessage.json5

@@ -0,0 +1,15 @@
+{
+  "commitMessageTopic": "{{depName}}",
+  "commitMessageExtra": "to {{newVersion}}",
+  "commitMessageSuffix": "",
+  "packageRules": [
+    {
+      "matchDatasources": ["helm"],
+      "commitMessageTopic": "chart {{depName}}"
+    },
+    {
+      "matchDatasources": ["docker"],
+      "commitMessageTopic": "image {{depName}}"
+    }
+  ]
+}