Fix typos

Author: kounelisagis

tiledb/ctx.py

@@ -209,7 +209,7 @@ def dict(self, prefix: str = ""):
 
         :param str prefix: return only parameters with a given prefix
         :rtype: dict
-        :return: Config parameter / values as a a Python dict
+        :return: Config parameter / values as a Python dict
 
         """
         return dict(ConfigItems(self, prefix=prefix))

tiledb/vfs.py

@@ -95,7 +95,7 @@ def write(self, file: lt.FileHandle, buff: Union[str, bytes]):
         """
         if isinstance(file, FileIO):
             raise lt.TileDBError(
-                "`tiledb.VFS().open` now returns a a FileIO object. Use "
+                "`tiledb.VFS().open` now returns a FileIO object. Use "
                 "`FileIO.write`. This message will be removed in 0.21.0.",
             )
         if isinstance(buff, str):
@@ -115,7 +115,7 @@ def read(self, file: lt.FileHandle, offset: int, nbytes: int) -> bytes:
         """
         if isinstance(file, FileIO):
             raise lt.TileDBError(
-                "`tiledb.VFS().open` now returns a a FileIO object. Use "
+                "`tiledb.VFS().open` now returns a FileIO object. Use "
                 "`FileIO.seek` and `FileIO.read`. This message will be removed "
                 "in 0.21.0."
             )