fail to update when file name contains `tex` in the middle

[HuStmpHrrr]

latex-preview-pane/latex-preview-pane.el

Line 299 in 5297668

(pdf-buff-name (replace-regexp-in-string "\.tex" ".pdf" (buffer-name (get-file-buffer (lpp/buffer-file-name))))))

This is caused by the line above. It should be fixed by changing the pattern to "\.tex".