Minor changes to some cover elements

[jtsimoes]

This is a small PR that removes an incorrect space before comma (sorry, my OCD can't handle it 🙃) on the second page, next to the degree name.

I've also taken the opportunity to fix the title of the new section on acknowledging the use of AI, in accordance with the guidelines (portuguese short form for "AI" is "IA"), and also to add the english version of that same title, in line with the other sections that also have it (jury, acknowledgements, ...).

	Before	After
Space after degree name
Space after degree name (w/ MAP Doctoral program)
AI acknowledgement section title

[jtsimoes]

If there is interest, I can add one more change to this PR: to allow the introduction of text in PT and EN in these common sections (acknowledgement of use of AI tools and acknowledgments, since there's no need on the jury section). This could solve issue #5

I tried to do it directly in cover.tex with \newline or with \\, to better distinguish the two:

\Acknowledgements{
    Agradeço toda a ajuda a todos os meus colegas e companheiros.
    \newline
    \newline
    I would like to thank all my colleagues and colleagues for their help.
}

But it gives an error, probably because it is not allowed to use commands inside another command. That's why I think I need to split the command in two parameters, to allow formatting.

Like so:

\newcommand{\MAPProgram}[1]{\def\ciMAPProgram{#1}}
\newcommand{\GrantText}[2]{\def\ciGrantFirst{#1}\def\ciGrantSecond{#2}}
- \newcommand{\Acknowledgements}[1]{\def\ciAcknowledgements{#1}}
+ \newcommand{\Acknowledgements}[2]{\def\ciAcknowledgementsPT{#1}\def\ciAcknowledgementsEN{#2}}
\newcommand{\JuriMember}[2]{
    \listadd{\ciJuriMember}{\JURI{\JURICATEGORY}{#1}{#2}}
}

...

%
% Acknowledgement page
%
%
-\ifdefined \ciAcknowledgements
+\ifdefined \ciAcknowledgementsPT
\TitlePage
  \vspace*{95mm}
  \SECTION{\textbf{agradecimentos~/\newline acknowledgements}}
-       {\ciAcknowledgements}
+       {\ciAcknowledgementsPT \newline \newline \ciAcknowledgementsEN}
\EndTitlePage
\fi

The EN form would be optional, of course.

I know it's not mandatory for the submission, but I'm doing it on mine, so it wouldn't cost me anything to migrate those changes here too