DOC: Use the correct punctuation marks for et al..

[jhlegarreta]

Change et. al for et al..

[jhlegarreta]

The reported error

FAIL: dipy.reconst.tests.test_dki_micro.test_single_fiber_model
Arrays are not almost equal to 7 decimals

for Python 3.4 is unrelated to the changes introduced in this topic. Only documentation has been changed. @arokem @skoudoro I'd dare to say that this is ready to be merged.

[arokem]

Yep. Let's see if it persists when I merge this on master. We might have to deal with this on a separate issue.

[codecov-io]

Codecov Report

Merging #1484 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1484   +/-   ##
=======================================
  Coverage   87.49%   87.49%           
=======================================
  Files         241      241           
  Lines       30805    30805           
  Branches     3322     3322           
=======================================
  Hits        26952    26952           
  Misses       3078     3078           
  Partials      775      775

Impacted Files	Coverage Δ
dipy/reconst/gqi.py	54.54% <ø> (ø)	⬆️
dipy/workflows/reconst.py	81.31% <ø> (ø)	⬆️
dipy/reconst/shm.py	86.64% <ø> (ø)	⬆️
dipy/reconst/shore.py	85.15% <ø> (ø)	⬆️
dipy/reconst/mapmri.py	90.07% <ø> (ø)	⬆️
dipy/reconst/forecast.py	92.22% <ø> (ø)	⬆️
dipy/reconst/dsi.py	81.31% <ø> (ø)	⬆️

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