docs: fix issue 1700

[fedepad]

Description

• Wrong property name. It was base_route but should have been route_base

• Has associated issue: Fixes Type error in the official rest_api example code  #1700

[codecov]

Codecov Report

Merging #1701 (6792638) into master (3d351c9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1701   +/-   ##
=======================================
  Coverage   76.67%   76.67%           
=======================================
  Files          55       55           
  Lines        8091     8091           
=======================================
  Hits         6204     6204           
  Misses       1887     1887           

Flag	Coverage Δ
python	76.67% <ø> (ø)

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[dpgaspar]

nice! thks