docs: fix deprecated or broken examples in urllib.request documentation.

[Mr-Sunglasses]

Documentation

ref. https://docs.python.org/3/library/urllib.request.html#examples

There are many example in urllib.request documentation that need to be updated as they no longer works as expected.

In the following example, we are sending a data-stream to the stdin of a CGI and reading the data it returns to us. Note that this example will only work when the Python installation supports SSL.

Use of Basic HTTP Authentication:

[StanFromIreland]

Did you not just open the same issue two days ago? #130283

[Mr-Sunglasses]

Did you not just open the same issue two days ago? #130283

There is a difference in this on and #130283 , I only covered a single example there which are these one:

But after digging into other examples, many of them are not working do, I decided to open this issue.

btw thanks @StanFromIreland , I will make #130283 more precise so that I does not create any confusion.

[StanFromIreland]

One issue is fine for all examples on one page. Please choose one.

[Mr-Sunglasses]

One issue is fine for all examples on one page. Please choose one.

Thanks, closing this in favor of #130283