DOC/MINOR: fix tls-alpn version availability

Author: oktalz

documentation/README.md

@@ -86,7 +86,7 @@ This is autogenerated from [doc.yaml](doc.yaml). Description can be found in [ge
 | [timeout-server-fin](#timeouts) | [time](#time) |  |  |:large_blue_circle:|:white_circle:|:white_circle:|
 | [timeout-tunnel](#timeouts) | [time](#time) | "1h" |  |:large_blue_circle:|:white_circle:|:white_circle:|
 | [whitelist](#access-control) | IPs or CIDRs |  |  |:large_blue_circle:|:large_blue_circle:|:white_circle:|
-| [tls-alpn](#https) | string | "h2,http/1.1" |  |:large_blue_circle:|:white_circle:|:white_circle:|
+| [tls-alpn](#https) :construction:(dev) | string | "h2,http/1.1" |  |:large_blue_circle:|:white_circle:|:white_circle:|
 
 > :information_source: Annotations have hierarchy: `default` <- `Configmap` <- `Ingress` <- `Service`
 >
@@ -816,6 +816,9 @@ ssl-redirect-port: 8443
 
 ##### `tls-alpn`
 
+
+  > :construction: this is only available from next version, currently available in dev build
+
   Define the TLS ALPN extension advertisement. This will change the alpn advertisement for the https frontend when ssl is enabled.
 
   Available on:  `configmap`

documentation/doc.yaml

@@ -1769,6 +1769,6 @@ annotations:
       - Comma-separated list of protocol names to advertise as supported on top of ALPN
     applies_to:
       - configmap
-    version_min: "1.6"
+    version_min: "1.7"
     example:
       - "tls-alpn: http/1.1"