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"
           }
         },
@@ -35,6 +35,12 @@
         }
       }
     },
+    {
+      "foreach": {
+        "field": "textChunks",
+        "processor"
+      }
+    },
     {
       "text_embedding": {
         "model_id": "${model_id}",