Documentation for Validation operators mentions Bind (>>=), but the library doesn't implement it

[sonicbhoc]

Describe the bug
Looking through the source code through for the validation operators, the Bind operator (>>=) is not defined, even though the documentation references it specifically.

Instead, the following error message is displayed:

FS0043: Expecting a type supporting the operator `>>=` but given a function type. You may be missing an argument to a function.

To Reproduce
Attempt to use the >>= operator

Expected behavior
Function composition with Bind

Desktop (please complete the following information):

• OS: Windows 10 Pro 20H2
• Browser: Microsoft Edge 106
• Version: 3.1.0

[TheAngryByrd]

Yeah looks like the validation operators aren’t opening the Result ones. Will be happy to take a PR for this.