docs: SILE 0.15 handles spaces after environments differently

examples/resume-sample.sil

@@ -33,7 +33,7 @@
         \item{Solved over 50+ criminal investigations}
         \item{Exposed the criminal organization of Prof. Moriarty}
 \end{itemize}
-      }
+}
     \end{entry}
     \begin{entry}
       \topic{1875–1881}
@@ -43,7 +43,7 @@
         \item{Solved an important number of criminal cases}
         \item{Close collaboration with Scotland Yard}
 \end{itemize}
-      }
+}
     \end{entry}
     \begin{entry}
       \topic{1872–1875}
@@ -53,7 +53,7 @@
         \item{Dissected a large variety of rodents & reptiles}
         \item{Explored the fields of forensic analysis & analytical chemistry}
 \end{itemize}
-      }
+}
     \end{entry}
   \end{section}