fix: escape pipe symbol in a table

Author: porridge

content/en/docs/tasks/extend-kubernetes/custom-resources/custom-resource-definitions.md

@@ -1204,9 +1204,9 @@ Example Usage:
 
 | CEL                                     | Description |
 |-----------------------------------------|-------------|
-| `self.foo == "foo" || (oldSelf.hasValue() && oldSelf.value().foo != "foo")` | Ratcheted rule. Once a value is set to "foo", it must stay foo. But if it existed before the "foo" constraint was introduced, it may use any value |
-| [oldSelf.orValue(""), self].all(x, ["OldCase1", "OldCase2"].exists(case, x == case)) || ["NewCase1", "NewCase2"].exists(case, self == case) || ["NewCase"].has(self)` | "Ratcheted validation for removed enum cases if oldSelf used them" |
-| oldSelf.optMap(o, o.size()).orValue(0) < 4 || self.size() >= 4 | Ratcheted validation of newly increased minimum map or list size |
+| <code>self.foo == "foo" &#124;&#124; (oldSelf.hasValue() && oldSelf.value().foo != "foo")</code> | Ratcheted rule. Once a value is set to "foo", it must stay foo. But if it existed before the "foo" constraint was introduced, it may use any value |
+| <code>[oldSelf.orValue(""), self].all(x, ["OldCase1", "OldCase2"].exists(case, x == case)) &#124;&#124; ["NewCase1", "NewCase2"].exists(case, self == case) &#124;&#124; ["NewCase"].has(self)</code> | "Ratcheted validation for removed enum cases if oldSelf used them" |
+| <code>oldSelf.optMap(o, o.size()).orValue(0) < 4 &#124;&#124; self.size() >= 4</code> | Ratcheted validation of newly increased minimum map or list size |
 
 
 #### Validation functions {#available-validation-functions}