Fix typo
Fix typo

Signed-off-by: Connor Behan <89f96a099c47edae2e9c5a371cbf43991ac7aa8c@gmail.com>

symengine/symengine.py,bjodah/symengine.py,symengine/symengine.py,symengine/symengine.py,bjodah/symengine.py,bjodah/symengine.py