Update Release Notes

diff --git a/SALOME_7_5_0_Release_Notes.pdf b/SALOME_7_5_0_Release_Notes.pdf
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diff --git a/SALOME_7_5_1_Release_Notes.pdf b/SALOME_7_5_1_Release_Notes.pdf
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index 0000000..c07b85d
Binary files /dev/null and b/SALOME_7_5_1_Release_Notes.pdf differ