Typo in Theta graph z-axis label

[Ruuudy1]

Expected Behavior

Location: Learning Center Articles / Introduction To Options / The Greek Letters / Theta
The Z-axis label for the Theta graph in the "Greek Letters" documentation should be correctly labeled as "Theta". This applies to both the Python code implementation and the graph output image.

Actual Behavior

The Z-axis label is incorrectly set as "rho" in the following code snippet and in the graph image:

ax.set_zlabel('rho')

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