doc: update with new HTTP configuration options

Signed-off-by: Simon Pasquier <[email protected]>

docs/configuration.md

@@ -424,6 +424,9 @@ authorization:
 oauth2:
   [ <oauth2> ]
 
+# Whether to enable HTTP2.
+[ enable_http2: <bool> | default: true ]
+
 # Optional proxy URL.
 [ proxy_url: <string> ]
 
@@ -463,6 +466,9 @@ endpoint_params:
 # Configures the token request's TLS settings.
 tls_config:
   [ <tls_config> ]
+
+# Optional proxy URL.
+[ proxy_url: <string> ]
 ```
 
 ## `<tls_config>`
@@ -483,6 +489,17 @@ A `tls_config` allows configuring TLS connections.
 
 # Disable validation of the server certificate.
 [ insecure_skip_verify: <boolean> | default = false]
+
+# Minimum acceptable TLS version. Accepted values: TLS10 (TLS 1.0), TLS11 (TLS
+# 1.1), TLS12 (TLS 1.2), TLS13 (TLS 1.3).
+# If unset, Prometheus will use Go default minimum version, which is TLS 1.2.
+# See MinVersion in https://pkg.go.dev/crypto/tls#Config.
+[ min_version: <string> ]
+# Maximum acceptable TLS version. Accepted values: TLS10 (TLS 1.0), TLS11 (TLS
+# 1.1), TLS12 (TLS 1.2), TLS13 (TLS 1.3).
+# If unset, Prometheus will use Go default maximum version, which is TLS 1.3.
+# See MaxVersion in https://pkg.go.dev/crypto/tls#Config.
+[ max_version: <string> ]
 ```
 
 ## `<receiver>`