Change anchor name from _boosting to boosting

Author: craigtaverner

docs/redirects.yml

@@ -5,7 +5,10 @@ redirects:
   'reference/query-languages/term-level-queries.md': 'reference/query-languages/query-dsl/term-level-queries.md'
   'reference/query-languages/query-dsl-term-query.md': 'reference/query-languages/query-dsl/query-dsl-term-query.md'
   'reference/query-languages/query-dsl-multi-match-query.md': 'reference/query-languages/query-dsl/query-dsl-multi-match-query.md'
-  'reference/query-languages/query-dsl-query-string-query.md': 'reference/query-languages/query-dsl/query-dsl-query-string-query.md'
+  'reference/query-languages/query-dsl-query-string-query.md':
+    to: 'reference/query-languages/query-dsl/query-dsl-query-string-query.md'
+    anchors:
+      '_boosting': 'boosting'
   'reference/query-languages/shape-queries.md': 'reference/query-languages/query-dsl/shape-queries.md'
   'reference/query-languages/geo-queries.md': 'reference/query-languages/query-dsl/geo-queries.md'
   'reference/query-languages/full-text-queries.md': 'reference/query-languages/query-dsl/full-text-queries.md'

docs/reference/query-languages/query-dsl/query-dsl-query-string-query.md

@@ -383,7 +383,7 @@ age:(+>=10 +<20)
 The parsing of ranges in query strings can be complex and error prone. It is much more reliable to use an explicit [`range` query](/reference/query-languages/query-dsl/query-dsl-range-query.md).
 
 
-#### Boosting [_boosting]
+#### Boosting [boosting]
 
 Use the *boost* operator `^` to make one term more relevant than another. For instance, if we want to find all documents about foxes, but we are especially interested in quick foxes: