[diff.dcl] Replace 'field initializers' with 'member initializers' (#6482)

Author: Eisenwave

source/compatibility.tex

@@ -2768,7 +2768,7 @@
 \rationale
 In \Cpp{}, members are destroyed in reverse construction order
 and the elements of an initializer list are evaluated in lexical order,
-so field initializers must be specified in order.
+so member initializers must be specified in order.
 Array designators conflict with \grammarterm{lambda-expression} syntax.
 Nested designators are seldom used.
 \effect