docs: Clarify comment from 1db7277 and remove incorrect interpretation

Author: jpmckinney

CHANGELOG.rst

@@ -12,7 +12,7 @@
 1.10.0 - April 27, 2024
 -----------------------
 
--  feat: :meth:`.Table.from_csv` reads the file line by line. If ``sniff_limit=None``, it reads the file into memory once, instead of twice. If ``column_types`` is a :class:`.TypeTester`, it reads the file into memory. (#778)
+-  feat: :meth:`.Table.from_csv` reads the file line by line. If ``column_types`` is a :class:`.TypeTester`, it reads the file into memory. (#778)
 -  fix: Fix :meth:`.TableSet.print_structure` for nested tablesets. (#765)
 
    .. code-block:: python

agate/table/from_csv.py

@@ -63,7 +63,7 @@ def from_csv(cls, path, column_names=None, column_types=None, row_names=None, sk
         handle = f
 
         if sniff_limit is None:
-            # Reads to the end of the file, but avoid reading the file twice.
+            # Overwrite `handle` to not read the file a second time in `csv.reader`.
             handle = io.StringIO(f.read())
             sample = handle.getvalue()
         elif sniff_limit > 0: