[over.over] Missed edit for P0847R7

P0847R7 (Deducing this) was approved at the October, 2021 meeting
and applied with commit ee5117e,
missing this change.

source/overloading.tex

@@ -3004,7 +3004,7 @@
 explicit object member functions
 match targets of function pointer type or
 reference to function type.
-Non-static member functions match targets of
+Implicit object member functions match targets of
 pointer-to-member-function type.
 \begin{note}
 %% FIXME: Should this only apply after the eliminations in the next paragraph?