Docstring for `estimate_error` references the wrong SSW function
The docstring for aiapy.calibrate.estimate_error
says that it is adapted directly from aia_bp_corrections.pro
. However, this is incorrect. It should say it is adapted from aia_bp_estimate_error.pro
. Additionally, the link to the script is currently broken. There is an extra "ssw" in the URL that needs to be removed.