PI-2526 Update chunk size to match the value used by data science evals

Author: marcus-bcl

projects/person-search-index-from-delius/container/pipelines/contact/index/ingest-pipeline.tpl.json

@@ -25,8 +25,8 @@
       "text_chunking": {
         "algorithm": {
           "fixed_token_length": {
-            "token_limit": 10,
-            "overlap_rate": 0.1,
+            "token_limit": 64,
+            "overlap_rate": 0.125,
             "tokenizer": "standard"
           }
         },