=doc fix inaccurate docs #20632 (#20652)

* Replace Rest with Remaining and RestPath with RemainingPath
* changed files: path-directives.rst and path-matchers.rst

akka-docs/rst/java/http/routing-dsl/directives/path-directives.rst

@@ -56,9 +56,9 @@ Predefined path matchers allow extraction of various types of values:
   Matches if the unmatched path starts with a path segment (i.e. not a slash).
   If so the path segment is extracted as a ``String`` instance.
 
-``PathMatchers.Rest``
+``PathMatchers.Remaining``
   Matches and extracts the complete remaining unmatched part of the request's URI path as an (encoded!) String.
-  If you need access to the remaining *decoded* elements of the path use ``RestPath`` instead.
+  If you need access to the remaining *decoded* elements of the path use ``RemainingPath`` instead.
 
 ``PathMatchers.intValue``
   Efficiently matches a number of decimal digits (unsigned) and extracts their (non-negative) ``Int`` value. The matcher

akka-docs/rst/scala/http/routing-dsl/path-matchers.rst

@@ -69,11 +69,11 @@ Segment: PathMatcher1[String]
 PathEnd: PathMatcher0
   Matches the very end of the path, similar to ``$`` in regular expressions and extracts nothing.
 
-Rest: PathMatcher1[String]
+Remaining: PathMatcher1[String]
   Matches and extracts the complete remaining unmatched part of the request's URI path as an (encoded!) String.
-  If you need access to the remaining *decoded* elements of the path use ``RestPath`` instead.
+  If you need access to the remaining *decoded* elements of the path use ``RemainingPath`` instead.
 
-RestPath: PathMatcher1[Path]
+RemainingPath: PathMatcher1[Path]
   Matches and extracts the complete remaining, unmatched part of the request's URI path.
 
 IntNumber: PathMatcher1[Int]