Raise exception if output.txt is not empty

Author: FabioRosado

doc/make.py

@@ -308,6 +308,14 @@ def zip_html(self):
     def spellcheck(self):
         """Spell check the documentation."""
         self._sphinx_build('spelling')
+        output_location = os.path.join('build', 'spelling', 'output.txt')
+        with open(output_location) as output:
+            lines = output.readlines()
+            if lines:
+                raise SyntaxError(
+                    'Found misspelled words.'
+                    ' Check pandas/doc/build/spelling/output.txt'
+                    ' for more details.')
 
 
 def main():

doc/source/spelling_wordlist.txt

@@ -4,6 +4,8 @@ numpy
 NumPy
 Reindexing
 reindexing
+ga
+fe
 reindexed
 Histogramming
 histogramming