upate -- all current systems have accurate clocks

git-svn-id: https://svn.r-project.org/R/trunk@88412 00db46b3-68df-0310-9c12-caf00c1e9a41

Author: ripley

src/library/base/man/proc.time.Rd

@@ -1,6 +1,6 @@
 % File src/library/base/man/proc.time.Rd
 % Part of the R package, https://www.R-project.org
-% Copyright 1995-2020 R Core Team
+% Copyright 1995-2025 R Core Team
 % Distributed under GPL 2 or later
 
 \name{proc.time}
@@ -44,8 +44,9 @@ proc.time()
 
   The resolution of the times will be system-specific and on Unix-alikes
   times are rounded down to milliseconds.  On modern systems they will
-  be that accurate, but on older systems they might be accurate to 1/100
-  or 1/60 sec.  They are typically available to 10ms on Windows.
+  be that accurate, but in the 20th century they might have
+  been accurate to 1/100 or 1/60 sec.  They are typically available to
+  10ms on Windows.
 
   This is a \link{primitive} function.
 }