DOC: config: fix option spop-check proxy compatibility

The doc mentioned that spop-check option may only be used for backends.
However, option may be used in default and listen sections as well
according to the code. Let's fix the doc so that doc and code are
consistent to each other.

This could be backported to all stable versions.

(cherry picked from commit f3a2ae7c6354bfbb1054a54d46658cf4410fd4bb)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit f0c6f5ea7296c218ea4a1f28c684ad64de2f6bc8)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 393d7d42843251cfc06b1e7a6335f70a5b4c5551)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit e53224d718591c503ce64b7bad4c4dd7773d2ee4)
Signed-off-by: Willy Tarreau <w@1wt.eu>
1 file changed