Merge pull request #257 from joshichaitanya3/doc-fix

Fix parenthesis

Author: softmattertheory

help/complex.md

@@ -25,7 +25,7 @@ or alternatively:
     print a.real()
     print a.imag() 
 
-[showsubtopics]: # subtopics
+[showsubtopics]: # (subtopics)
 
 ## Angle
 [tagangle]: # (angle)