[range.cache.latest.view] Add \exposid for cache-t (#7512)

Author: hewillk

source/ranges.tex

@@ -16775,7 +16775,7 @@
                                   add_pointer_t<range_reference_t<V>>,
                                   range_reference_t<V>>;
 
-    @\exposid{non-propagating-cache}@<cache-t> @\exposid{cache_}@;                              // \expos
+    @\exposid{non-propagating-cache}@<@\exposid{cache-t}@> @\exposid{cache_}@;                              // \expos
 
     class @\exposid{iterator}@;                                                     // \expos
     class @\exposid{sentinel}@;                                                     // \expos