[range.dangling] Split up overly long sentence.

Author: jensmaurer

source/ranges.tex

@@ -1808,14 +1808,15 @@
 \rSec2[range.dangling]{Dangling iterator handling}
 
 \pnum
-The tag type \tcode{dangling} is used together
-with the template aliases \tcode{borrowed_iterator_t} and \tcode{borrowed_subrange_t}
-to indicate that an algorithm
-that typically returns an iterator into or subrange of a \tcode{range} argument
-does not return an iterator or subrange
-which could potentially reference a range
-whose lifetime has ended for a particular rvalue \tcode{range} argument
-which does not model \libconcept{borrowed_range}\iref{range.range}.
+The tag type \tcode{dangling} is used together with the template aliases
+\tcode{borrowed_iterator_t} and \tcode{borrowed_subrange_t}.
+When an algorithm
+that typically returns an iterator into, or a subrange of, a range argument
+is called with an rvalue range argument
+that does not model \libconcept{borrowed_range}\iref{range.range},
+the return value possibly refers to a range whose lifetime has ended.
+In such cases,
+the tag type \tcode{dangling} is returned instead of an iterator or subrange.
 \indexlibraryglobal{dangling}%
 \begin{codeblock}
 namespace std::ranges {