Fixed misspelling in log message.
A debug message issued when the server is attempting to delete a lease for
the specified address from the PostgreSQL database for the specified address.
-% DHCPSRV_PGSQL_FATAL_ERROR Unrecoverable Postgres error occurred: Statement: <%1>, reason: %2 (error code: %3). Server exiting now!
+% DHCPSRV_PGSQL_FATAL_ERROR Unrecoverable PostgreSQL error occurred: Statement: <%1>, reason: %2 (error code: %3). Server exiting now!
An error message indicating that communication with the MySQL database server
has been lost. When this occurs the server exits immediately with a non-zero
exit code. This is most likely due to a network issue.