stop gls topic header splitting across page

glossary.tex

@@ -3,12 +3,10 @@
 % Alter topicmcols style
 
 %\renewcommand*{\glstopicPostSkip}{---}
-\renewcommand*{\glstopicPreSkip}{\bigLine\medskip}
+\renewcommand*{\glstopicPreSkip}{\bigLine\medskip\needspace{10\baselineskip}}
 \renewcommand*{\glstopicSubPreLocSep}{~\adforn{38}~}
 \renewcommand*{\glstopicInit}{\setlength{\parskip}{10pt}}
 
-
-
 \newglossary*{people}{People}
 \glssetcategoryattribute{people}{indexonlyfirst}{true}