Fix $to and $toName type in docblock

[RomainMazB]

Questions	Answers
Branch?	develop
Description?	Just a comment fix to ease IDE analysis
Type?	improvement
Category?	CO
BC breaks?	no
Deprecations?	no
Fixed ticket?	Doesn't fix anything
How to test?	There is nothing more to test
Possible impacts?	Absolutely not

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This change is 

[prestonBot]

Hello @RomainMazB!

This is your first pull request on the PrestaShop project. Thank you, and welcome to this Open Source community!

[prestonBot]

Hi, thanks for this contribution!

I found some issues with the Pull Request description:

• The type should be one of these: new feature, improvement, bug fix or refacto (Read explanation).
• The category should be one of these: BO, CO, FO, IN, LO, ME, PM, TE or WS (Read explanation)
• Your pull request does not seem to fix any issue, consider creating one (see note below) and linking it by writing Fixes #1234.

Would you mind having a look at it? This will help us understand how interesting your contribution is, thank you very much!

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[Progi1984]

A small comment

[RomainMazB]

I'm okay with that: I'm not working with PS for so long, dunno yet the code style.

[prestonBot]

Contribution merged, congratulations!

Would you mind answering our quick 1-minute survey? We would love to hear about your experience so far, it will help us improve our process for the community involved, like you. ;-)

[PierreRambaud]

Thank you @RomainMazB