[basic.def.odr] Replace mid-sentence period with "; and"

Author: zygoloid

source/basic.tex

@@ -474,8 +474,8 @@
 were present in the definition of \tcode{D}; that is, the default
 argument is subject to the requirements described in this paragraph (and, if
 the default argument has subexpressions with default arguments, this
-requirement applies recursively).\footnote{\ref{dcl.fct.default}
-describes how default argument names are looked up.}
+requirement applies recursively)\footnote{\ref{dcl.fct.default}
+describes how default argument names are looked up.}; and
 
 \item if \tcode{D} is a class with an implicitly-declared
 constructor~(\ref{class.ctor}), it is as if the constructor was