DOC: Update json_normalize docstring and latest whatsnewvX.X.X.rst file.

Author: skalwaghe-56

doc/source/whatsnew/v2.3.3.rst

@@ -24,6 +24,7 @@ Bug fixes
 ^^^^^^^^^
 - Fix regression in ``~Series.str.contains``, ``~Series.str.match`` and ``~Series.str.fullmatch``
   with a compiled regex and custom flags (:issue:`62240`)
+- Fixed bug in :func:`pandas.json_normalize` raising ``TypeError`` when non‑string elements were used in ``meta`` with ``record_path``; ``meta`` path elements are now coerced to strings when forming column labels (:issue:`62264`).
 
 .. ---------------------------------------------------------------------------
 .. _whatsnew_233.contributors:

pandas/io/json/_normalize.py

@@ -292,6 +292,7 @@ def json_normalize(
         assumed to be an array of records.
     meta : list of paths (str or list of str), default None
         Fields to use as metadata for each record in resulting table.
+        Path elements are converted to strings before joining into column labels.
     meta_prefix : str, default None
         If True, prefix records with dotted path, e.g. foo.bar.field if
         meta is ['foo', 'bar'].
@@ -322,6 +323,12 @@ def json_normalize(
     DataFrame : Two-dimensional, size-mutable, potentially heterogeneous tabular data.
     Series : One-dimensional ndarray with axis labels (including time series).
 
+    Notes
+    -----
+    Column labels are constructed by joining path elements,
+    with sep and are always strings after normalization;
+    non-string elements in meta paths are coerced to strings.
+
     Examples
     --------
     >>> data = [