Changed v3.0.0 to v5.0.0 in plugin docs

docs/plugins/mapper-attachments.asciidoc

@@ -1,7 +1,7 @@
 [[mapper-attachments]]
 === Mapper Attachments Plugin
 
-deprecated[3.0.0,The `mapper-attachments` plugin has been replaced by the <<ingest-attachment, `ingest-attachment`>> plugin]
+deprecated[5.0.0,The `mapper-attachments` plugin has been replaced by the <<ingest-attachment, `ingest-attachment`>> plugin]
 
 The mapper attachments plugin lets Elasticsearch index file attachments in common formats (such as PPT, XLS, PDF)
 using the Apache text extraction library http://lucene.apache.org/tika/[Tika].

docs/plugins/mapper.asciidoc

@@ -10,7 +10,7 @@ The core mapper plugins are:
 
 <<mapper-attachments>>::
 
-deprecated[3.0.0,The `mapper-attachments` plugin has been replaced by the <<ingest-attachment, `ingest-attachment`>> plugin]:
+deprecated[5.0.0,The `mapper-attachments` plugin has been replaced by the <<ingest-attachment, `ingest-attachment`>> plugin]:
 The mapper-attachments integrates http://lucene.apache.org/tika/[Apache Tika] to provide a new field type `attachment`
 to allow indexing of documents such as PDFs and Microsoft Word.