[DOCS] Rename ES Reference to ES Guide (#71198)

Author: jrodewig

docs/reference/index.asciidoc

@@ -1,5 +1,5 @@
 [[elasticsearch-reference]]
-= Elasticsearch Reference
+= Elasticsearch Guide
 
 :include-xpack:         true
 :es-test-dir:           {elasticsearch-root}/docs/src/test

docs/reference/links.asciidoc

@@ -1,4 +1,4 @@
-// These attributes define common links in the Elasticsearch Reference
+// These attributes define common links in the Elasticsearch Guide
 
 :ml-docs-setup:            {ml-docs}/setup.html[Set up {ml-features}]
 :ml-docs-setup-privileges: {ml-docs}/setup.html#setup-privileges[{ml-cap} security privileges]

docs/reference/redirects.asciidoc

@@ -835,7 +835,7 @@ See <<cat-transforms>>.
 
 This page was deleted.
 Information about the Java testing framework was removed
-({es-issue}55257[#55257]) from the {es} Reference
+({es-issue}55257[#55257]) from the {es} Guide
 because it was out of date and erroneously implied that it should be used by application developers.
 There is an issue ({es-issue}55258[#55258])
 for providing general testing guidance for applications that communicate with {es}.
@@ -845,7 +845,7 @@ for providing general testing guidance for applications that communicate with {e
 
 This page was deleted.
 Information about the Java testing framework was removed
-({es-issue}55257[55257]) from the {es} Reference because it was out of date and
+({es-issue}55257[55257]) from the {es} Guide because it was out of date and
 erroneously implied that it should be used by application developers.
 
 There is an issue ({es-issue}55258[#55258]) for providing general testing
@@ -857,7 +857,7 @@ guidance for applications that communicate with {es}.
 
 This page was deleted.
 Information about the Java testing framework was removed
-({es-issue}55257[55257]) from the {es} Reference
+({es-issue}55257[55257]) from the {es} Guide
 because it was out of date and erroneously implied that it should be used by application developers.
 There is an issue ({es-issue}[#55258])
 for providing general testing guidance for applications that communicate with {es}.
@@ -868,7 +868,7 @@ for providing general testing guidance for applications that communicate with {e
 
 This page was deleted.
 Information about the Java testing framework was removed
-({es-issue}55257[55257]) from the {es} Reference
+({es-issue}55257[55257]) from the {es} Guide
 because it was out of date and erroneously implied that it should be used by application developers.
 There is an issue ({es-issue}55258[#55258])
 for providing general testing guidance for applications that communicate with {es}.
@@ -879,7 +879,7 @@ for providing general testing guidance for applications that communicate with {e
 
 This page was deleted.
 Information about the Java testing framework was removed
-({es-issue}55257[55257]) from the {es} Reference
+({es-issue}55257[55257]) from the {es} Guide
 because it was out of date and erroneously implied that it should be used by application developers.
 There is an issue ({es-issue}55258[#55258])
 for providing general testing guidance for applications that communicate with {es}.
@@ -890,7 +890,7 @@ for providing general testing guidance for applications that communicate with {e
 
 This page was deleted.
 Information about the Java testing framework was removed
-({es-issue}55257[55257]) from the {es} Reference
+({es-issue}55257[55257]) from the {es} Guide
 because it was out of date and erroneously implied that it should be used by application developers.
 There is an issue ({es-issue}55258[#55258])
 for providing general testing guidance for applications that communicate with {es}.