Fixing an issue with the API end point in the extension package of gemini + a little README typo

[Muhammad-saad-2000]

Hello again @svilupp,

Following-up to my previous pull request regarding the Gemini issue. If you decided to integrate GoogleGenAI.jl package, there's a minor missing part in end point that is used in GoogleGenAIPromptingToolsExt.jl.

Also, there is a little README typo that is corrected as well (could have made it in a another pull request but thought that this very minor).

[svilupp]

Thank you for the PR. Would you mind separating the README typo please? I would accept that fix right away.

As for the GoogleGenAI, that was a light interface over old version of Tyler’s package. I suspect that it won’t be needed with the version he just requested for registering - we need to check what changes are required when the package is registered.

You can have a look if we need this function (by running PT + GoogleGenAI in its current form).
Also, some of my past requests were captured here: tylerjthomas9/GoogleGenAI.jl#2
There will be a need to have a look at what’s new and if we need to change how we interface with it.

[Muhammad-saad-2000]

I will wait for the registered version and see what should be done 👍🏼

[svilupp]

Similarly to the other PR, I'd suggest closing this as resolved.