Update thesis.md

Author: rrevoid

_i18n/en/thesis.md

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 | Mikhailov Bair | Development of Machine Learning Methods for Radiology in Brain Evolution Research | [Dylov D.V](https://faculty.skoltech.ru/people/dmitrydylov)  | [Project](https://github.com/intsystems/Mikhailov-MS-Thesis) | [Thesis](https://github.com/intsystems/Mikhailov-MS-Thesis/blob/master/paper/main.pdf) | [Slides](https://github.com/intsystems/Mikhailov-MS-Thesis/blob/master/slides/slides.pdf)|
 | Chumachenko Arina | Preventing Overfitting in Subject-Driven Text-to-Image Diffusion: Regularization of Embedding and Attention Maps | [Oseledets I.V.](https://faculty.skoltech.ru/people/ivanoseledets) | [Project](https://github.com/arina-chumachenko/Chumachenko-MS-Thesis) | [Paper](https://github.com/arina-chumachenko/Chumachenko-MS-Thesis/blob/main/paper/Thesis_Chumachenko_MIPT.pdf) | [Slides](https://github.com/arina-chumachenko/Chumachenko-MS-Thesis/blob/main/slides/Presentation_MIPT.pdf) |
 | Gritsai German | Verification of artificially generated text fragments | [Grabovoy A. V.](https://andriygav.github.io/) |  [Project](https://github.com/intsystems/Gritsai-MS-Thesis) | [Thesis](https://github.com/intsystems/Gritsai-MS-Thesis/blob/master/paper/MS_thesis.pdf) | [Slides](https://github.com/intsystems/Gritsai-MS-Thesis/blob/master/slides/mipt_nir%20(1).pdf)|
+| Petrushina Kseniia | Detection of Multimodal Hallucinations Based on Internal Representations and Activations of Models | [Panchenko A. I.](https://new.skoltech.ru/persons/panchenko-aleksandr-ivanovich) |  [Project](https://github.com/intsystems/Petrushina-MS-Thesis) | [Thesis](https://github.com/intsystems/Petrushina-MS-Thesis/blob/master/paper/Thesis2025Petrushina.pdf) | [Slides](https://github.com/intsystems/Petrushina-MS-Thesis/blob/master/slides/Slides2025Petrushina.pdf)|
 
 #### Bachelor's Theses