[class.copy.assign] Remove extraneous space before the first word of para 1

Author: CaseyCarter

source/special.tex

@@ -2814,7 +2814,7 @@
 \indextext{copy!class object|see{assignment operator, copy}}%
 \indextext{move!class object|see{assignment operator, move}}%
 \indextext{operator!copy assignment|see{assignment operator, copy}}%
-\indextext{operator!move assignment|see{assignment operator, move}}
+\indextext{operator!move assignment|see{assignment operator, move}}%
 A user-declared \term{copy} assignment operator \tcode{X::operator=} is a
 non-static non-template member function of class \tcode{X} with exactly one
 parameter of type \tcode{X}, \tcode{X\&}, \tcode{const} \tcode{X\&},