Minor typo fixes

theano/misc/do_nightly_build

@@ -23,9 +23,10 @@ fi
 
 echo "Number of elements in the compiledir:"
 ls ${COMPILEDIR}|wc -l
-# We don't want warning for fixed error in the buildbot
+# We don't want warnings in the buildbod for errors already fixed.
 FLAGS=${THEANO_FLAGS},warn.argmax_pushdown_bug=False,warn.gpusum_01_011_0111_bug=False,warn.sum_sum_bug=False,warn.sum_div_dimshuffle_bug=False,$FLAGS
-# We want to see correctly optimization error, so make make them raise an error
+# We want to see correctly optimization errors, so make make them raise an
+# error.
 FLAGS=on_opt_error=raise,$FLAGS
 # Ignore user device and floatX config, because:
 #   1. Tests are intended to be run with device=cpu.