Fix MD060 table-column-style errors for markdownlint 0.48.0

- Add consistent spacing to table separator row in submariner-operator/README.md
- Disable MD060 rule in .markdownlint.yml as tables use padded style with
  empty cells that the rule incorrectly flags

Signed-off-by: Tom Pantelis <tompantelis@gmail.com>

.markdownlint.yml

@@ -2,6 +2,9 @@
 # Breaks reusing MD snippets extracted to files
 first-line-heading: false
 
+# Accept any consistent table column style
+table-column-style: false
+
 # Set maximum line Length to 140c to match Go linting
 line-length:
   line_length: 140

submariner-operator/README.md

@@ -17,7 +17,7 @@ Submariner enables direct networking between Pods and Services in different Kube
 ## Values
 
  | Key | Type | Default | Description |
- |-----|------|---------|-------------|
+ | ----- | ------ | --------- | ------------- |
  | broker.ca | string | `""` |  |
  | broker.globalnet | bool | `false` |  |
  | broker.insecure | bool | `false` |  |