doc: Add ALTER/DROP ROUTINE to the event trigger matrix
ALTER ROUTINE triggers the events ddl_command_start and ddl_command_end,
and DROP ROUTINE triggers sql_drop, ddl_command_start and
ddl_command_end, but this was not mention on the matrix table.
Reported-by: Leslie Lemaire
Discussion:
Backpatch-through: 11
<entry align="center"><literal>-</literal></entry>
<entry align="center"></entry>
</row>
+ <row>
+ <entry align="left"><literal>ALTER ROUTINE</literal></entry>
+ <entry align="center"><literal>X</literal></entry>
+ <entry align="center"><literal>X</literal></entry>
+ <entry align="center"><literal>-</literal></entry>
+ <entry align="center"><literal>-</literal></entry>
+ <entry align="left"></entry>
+ </row>
<row>
<entry align="left"><literal>ALTER SCHEMA</literal></entry>
<entry align="center"><literal>X</literal></entry>
<entry align="center"><literal>-</literal></entry>
<entry align="center"></entry>
</row>
+ <row>
+ <entry align="left"><literal>DROP ROUTINE</literal></entry>
+ <entry align="center"><literal>X</literal></entry>
+ <entry align="center"><literal>X</literal></entry>
+ <entry align="center"><literal>X</literal></entry>
+ <entry align="center"><literal>-</literal></entry>
+ <entry align="left"></entry>
+ </row>
<row>
<entry align="left"><literal>DROP RULE</literal></entry>
<entry align="center"><literal>X</literal></entry>
