[macros] Remove \xspace from the definition of \grammarterm

It caused stray whitespace for plurals, such as in
\grammarterm{cv-qualifier}s.

Author: jensmaurer

source/macros.tex

@@ -160,7 +160,7 @@
 \newcommand{\defnx}[2]{\indexdefn{#2}\textit{#1}\xspace}
 \newcommand{\defn}[1]{\defnx{#1}{#1}}
 \newcommand{\term}[1]{\textit{#1}\xspace}
-\newcommand{\grammarterm}[1]{\textit{#1}\xspace}
+\newcommand{\grammarterm}[1]{\textit{#1}}
 \newcommand{\placeholder}[1]{\textit{#1}}
 \newcommand{\placeholdernc}[1]{\textit{#1\nocorr}}