[Docs] Fix store file meta data docs. (#91188)

server/src/main/java/org/elasticsearch/index/store/StoreFileMetadata.java

@@ -190,7 +190,7 @@ public class StoreFileMetadata implements Writeable {
      * - For generational segment files (i.e. updated docvalues, liv files etc) this is {@link SegmentCommitInfo#getId()}
      *     which uniquely identifies the generation of the segment.
      *
-     * This ID may be {@link StoreFileMetadata#UNAVAILABLE_WRITER_UUID} (i.e. zero-length) if unavilable, e.g.:
+     * This ID may be {@link StoreFileMetadata#UNAVAILABLE_WRITER_UUID} (i.e. zero-length) if unavailable, e.g.:
      *
      * - The file was written by a version of Lucene prior to {@link org.apache.lucene.util.Version#LUCENE_8_6_0}.
      * - The metadata came from a version of Elasticsearch prior to {@link StoreFileMetadata#WRITER_UUID_MIN_VERSION}).