Update some cross-references to point to the sentence about what frozen indices were, rather than to the notice about the removal of the unfreeze API

Author: PeteGillinElastic

docs/reference/indices/index-mgmt.asciidoc

@@ -43,9 +43,7 @@ For more information on managing indices, refer to <<indices, Index APIs>>.
 
 * To filter the list of indices, use the search bar or click a badge.
 Badges indicate if an index is a <<ccr-put-follow,follower index>>, a
-<<rollup-get-rollup-index-caps,rollup index>>, or <<unfreeze-index-api,frozen>>.
-
-// TODO(pete): Figure out whether it's okay for this to point to the 'deleted pages' entry.
+<<rollup-get-rollup-index-caps,rollup index>>, or <<frozen-indices,frozen>>.
 
 * To drill down into the index
 <<mapping,mappings>>, <<index-modules-settings,settings>>, and statistics,

docs/reference/sql/language/indices.asciidoc

@@ -100,11 +100,9 @@ requires the keyword `LIKE` for SQL `LIKE` pattern.
 [[sql-index-frozen]]
 === Frozen Indices
 
-By default, {es-sql} doesn't search <<unfreeze-index-api,frozen indices>>. To
+By default, {es-sql} doesn't search <<frozen-indices,frozen indices>>. To
 search frozen indices, use one of the following features:
 
-// TODO(pete): Figure out whether it's okay for this to point to the 'deleted pages' entry.
-
 dedicated configuration parameter::
 Set to `true` properties `index_include_frozen` in the <<sql-search-api,SQL search API>> or `index.include.frozen` in the drivers to include frozen indices.