[over.oper.general] Change "basic type" to "fundamental type" (#7287)

The term "basic type" is used twice in this note but it's never defined anywhere, nor used.

Author: knatten

source/overloading.tex

@@ -3380,14 +3380,14 @@
 \pnum
 \indextext{operator}%
 \begin{note}
-The identities among certain predefined operators applied to basic types
+The identities among certain predefined operators applied to fundamental types
 (for example,
 \tcode{++a} $\equiv$
 \tcode{a+=1})
 need not hold for operator functions.
 Some predefined operators, such as
 \tcode{+=},
-require an operand to be an lvalue when applied to basic types;
+require an operand to be an lvalue when applied to fundamental types;
 this is not required by operator functions.
 \end{note}