chore: update to version 14.0.11 and align website URLs

packages/util/is/observable.js

@@ -0,0 +1,16 @@
+import { isOn } from './helpers.js';
+/**
+ * @name isBObservable
+ * @summary Tests for a `Observable` object instance.
+ * @description
+ * Checks to see if the input object is an instance of `BN` (bn.js).
+ * @example
+ * <BR>
+ *
+ * ```javascript
+ * import { isObservable } from '@pezkuwi/util';
+ *
+ * console.log('isObservable', isObservable(...));
+ * ```
+ */
+export const isObservable = /*#__PURE__*/ isOn('next');