doc: comverted --> converted (pandas-dev#14722)

Author: nicholsn

pandas/core/frame.py

@@ -1346,7 +1346,7 @@ def to_csv(self, path_or_buf=None, sep=",", na_rep='', float_format=None,
             file
         quoting : optional constant from csv module
             defaults to csv.QUOTE_MINIMAL. If you have set a `float_format`
-            then floats are comverted to strings and thus csv.QUOTE_NONNUMERIC
+            then floats are converted to strings and thus csv.QUOTE_NONNUMERIC
             will treat them as non-numeric
         quotechar : string (length 1), default '\"'
             character used to quote fields