DOC: configuration: replace "crt" by "ssl-f-use" in listeners

Replace the "crt" keyword from the frontend section with a "ssl-f-use"
keyword, "crt" could be ambigous in case we don't want to put a
certificate filename.

doc/configuration.txt

@@ -7258,63 +7258,6 @@ cookie <name> [ rewrite | insert | prefix ] [ indirect ] [ nocache ]
 
   See also : "balance source", "capture cookie", "server" and "ignore-persist".
 
-crt <crtname> [<sslbindconf> ...]*
-  Assignate a certificate to the current frontend.
-
-  May be used in the following contexts: tcp, http
-
-  May be used in sections :   defaults | frontend | listen | backend
-                                 no    |    yes   |   yes  |   no
-
-  Arguments :
-    <sslbindconf> supports the following keywords from the bind line
-    (see Section 5.1. Bind options):
-
-    - allow-0rtt
-    - alpn
-    - ca-file
-    - ca-verify-file
-    - ciphers
-    - ciphersuites
-    - client-sigalgs
-    - crl-file
-    - curves
-    - ecdhe
-    - no-alpn
-    - no-ca-names
-    - npn
-    - sigalgs
-    - ssl-min-ver
-    - ssl-max-ver
-    - verify
-
-    sslbindconf also supports the following keywords from the crt-store load
-    keyword (see Section 3.12.1. Load options):
-
-    - key
-    - ocsp
-    - issuer
-    - sctl
-    - ocsp-update
-
-  Assignate a certificate <crtname> to a crt-list created automatically with the
-  frontend name and prefixed by @ (ex: '@frontend1').
-
-  This implicit crt-list will be assigned to every "ssl" bind lines in a
-  frontend that does not already have the "crt" or the "crt-list" line.
-  crt-list commands from the stats socket are effective with this crt-list, so
-  one could replace, remove or add certificates and SSL options to it.
-
-  Example :
-
-    frontend https
-        bind :443 ssl
-        crt foobar.pem.rsa sigalgs "RSA-PSS+SHA256"
-        crt test.foobar.pem
-        crt test2.foobar.crt key test2.foobar.key ocsp test2.foobar.ocsp ocsp-update on
-
-  See also : "crt-list" and "crt".
-
 declare capture [ request | response ] len <length>
   Declares a capture slot.
 
@@ -12656,6 +12599,63 @@ stats admin { if | unless } <cond>
   See also : "stats enable", "stats auth", "stats http-request", section 3.4
              about userlists and section 7 about ACL usage.
 
+ssl-f-use [<sslbindconf> ...]*
+  Assignate a certificate to the current frontend.
+
+  May be used in the following contexts: tcp, http
+
+  May be used in sections :   defaults | frontend | listen | backend
+                                 no    |    yes   |   yes  |   no
+
+  Arguments :
+    <sslbindconf> supports the following keywords from the bind line
+    (see Section 5.1. Bind options):
+
+    - allow-0rtt
+    - alpn
+    - ca-file
+    - ca-verify-file
+    - ciphers
+    - ciphersuites
+    - client-sigalgs
+    - crl-file
+    - curves
+    - ecdhe
+    - no-alpn
+    - no-ca-names
+    - npn
+    - sigalgs
+    - ssl-min-ver
+    - ssl-max-ver
+    - verify
+
+    sslbindconf also supports the following keywords from the crt-store load
+    keyword (see Section 3.12.1. Load options):
+
+    - crt
+    - key
+    - ocsp
+    - issuer
+    - sctl
+    - ocsp-update
+
+  Assignate a certificate <crtname> to a crt-list created automatically with the
+  frontend name and prefixed by @ (ex: '@frontend1').
+
+  This implicit crt-list will be assigned to every "ssl" bind lines in a
+  frontend that does not already have the "crt" or the "crt-list" line.
+  crt-list commands from the stats socket are effective with this crt-list, so
+  one could replace, remove or add certificates and SSL options to it.
+
+  Example :
+
+    frontend https
+        bind :443 ssl
+        ssl-f-use crt foobar.pem.rsa sigalgs "RSA-PSS+SHA256"
+        ssl-f-use crt test.foobar.pem
+        ssl-f-use crt test2.foobar.crt key test2.foobar.key ocsp test2.foobar.ocsp ocsp-update on
+
+  See also : "crt-list" and "crt".
 
 stats auth <user>:<passwd>
   Enable statistics with authentication and grant access to an account