[basic.scope.param] Use "of" when referring to the containing production

Author: lprv

source/basic.tex

@@ -1491,7 +1491,7 @@
 \item
 If $P$ is associated with a \grammarterm{lambda-declarator},
 its scope extends to the end of the \grammarterm{compound-statement}
-in the \grammarterm{lambda-expression}.
+of the \grammarterm{lambda-expression}.
 \item
 If $P$ is associated with a \grammarterm{requirement-parameter-list},
 its scope extends to the end of the \grammarterm{requirement-body} of the \grammarterm{requires-expression}.