fix ticking off segments note

glossary.tex

@@ -219,7 +219,7 @@ This collection is all you will need for this book.}
 
   Some Segments have a `\glsentrytext{squash}' symbol, meaning they should be run at the same time as the next available Segment in the \glsentrytext{region}.
 
-  Once the Segments concludes, it should be marked as done with a `\glsentrytext{sqr}\vphantom{\hspace{-.5em}\textbackslash}', and the next Segment in the same \glsentrytext{sq} becomes ready (`\glsentrytext{sqr}')},
+  Once the Segments concludes, it should be marked as done with a `\glsentrytext{sqr}\hspace{-.5em}\textbackslash', and the next Segment in the same \glsentrytext{sq} becomes ready (`\glsentrytext{sqr}')},
   }
 
 \longnewglossaryentry{interval}{