Update ydb/docs/en/core/yql/reference/syntax/alter-sequence.md

Co-authored-by: ElenaAfina <144937430+ElenaAfina@users.noreply.github.com>

Author: shnikd

ydb/docs/en/core/yql/reference/syntax/alter-sequence.md

@@ -1,6 +1,6 @@
 # ALTER SEQUENCE
 
-Modifies the parameters of an existing `Sequence` object associated with a [Serial](../types/serial.md) column.
+Modifies parameters of an existing `Sequence` object associated with a [Serial](../types/serial.md) column.
 
 ## Syntax