fix(thrust_pad): resolve floating point precision in doctest

Author: gsabinoo

ross/bearings/thrust_pad.py

@@ -3225,7 +3225,7 @@ def show_coefficients_comparison(self):
         +-----------------+-------------------+-------------------+
         | Frequency [RPM] |     kzz [N/m]     |    czz [N*s/m]    |
         +-----------------+-------------------+-------------------+
-        |       90.0      | 317639857094.2357 | 10805717455.19912 |
+        |       90.0      | 317639857094.23... | 10805717455.199... |
         +-----------------+-------------------+-------------------+
         ===========================================================
         """