Catch last row of each table when horizontal strategy is text

[bobluda]

Fixes #466

[codecov]

Codecov Report

Merging #467 (1f296af) into develop (002500a) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 1f296af differs from pull request most recent head d3b8848. Consider uploading reports for the commit d3b8848 to get more accurate results

@@           Coverage Diff            @@
##           develop     #467   +/-   ##
========================================
  Coverage    98.28%   98.28%           
========================================
  Files           10       10           
  Lines         1227     1228    +1     
========================================
+ Hits          1206     1207    +1     
  Misses          21       21           

Impacted Files	Coverage Δ
pdfplumber/table.py	100.00% <100.00%> (ø)

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