Cast Functions and Operators page does not include casting to VECTOR datatype

[mjonss]

Change Request

Please answer the following questions before submitting your issue. Thanks!

1. Describe what you find is inappropriate or missing in the existing docs.
   This page does not list VECTOR as a type you can cast AS

2. Describe your suggestion or addition.

diff --git a/functions-and-operators/cast-functions-and-operators.md b/functions-and-operators/cast-functions-and-operators.md
index 4643760f7..c6e049400 100644
--- a/functions-and-operators/cast-functions-and-operators.md
+++ b/functions-and-operators/cast-functions-and-operators.md
@@ -44,6 +44,7 @@ The following types are supported:
 | `SIGNED [INTEGER]`   | Signed integer   | Yes                                                        |
 | `TIME(fsp)`          | Time             | Yes                                                        |
 | `UNSIGNED [INTEGER]` | Unsigned integer | Yes                                                        |
+| `VECTOR`             | Vector           | No                                                         |
 | `YEAR`               | Year             | No                                                         |
 
 Examples:

3. Provide some reference materials (such as documents and websites) if you could.
   https://docs.pingcap.com/tidb/stable/cast-functions-and-operators