some guide(s) may use outdated ulab code, update for 7.x

[Jeff Epler]

PyGamer_Improved_Thermal_Camera/code.py:grid_data = ulab.zeros(((2 * n) - 1, (2 * n) - 1))  # 15x15 color index narray
PyGamer_Improved_Thermal_Camera/code.py:histogram = ulab.zeros((2 * n) - 1)  # Histogram accumulation narray
PyGamer_Improved_Thermal_Camera/code.py:    histogram = ulab.zeros(GRID_AXIS)  # Clear histogram accumulation array

[Cedar Grove Maker Studios]

Was previously fixed in PR# #1953

from existing guide: