add F12 to the documentation and help

README.md

@@ -58,6 +58,7 @@ Keybinding                              | Description
 <kbd>F7</kbd>                           | Jump to search
 <kbd>F8</kbd>                           | Jump to response headers
 <kbd>F9</kbd>                           | Jump to response body
+<kbd>F12</kbd>                          | Redirects Restriction Mode
 
 
 ### Context specific search

config/config.go

@@ -74,6 +74,7 @@ var DefaultKeys = map[string]map[string]string{
 		"F7":    "focus search",
 		"F8":    "focus response-headers",
 		"F9":    "focus response-body",
+		"F12":   "redirects restriction mode",
 	},
 	"url": {
 		"Enter": "submit",

sample-config.toml

@@ -31,6 +31,7 @@ F6 = "focus headers"
 F7 = "focus search"
 F8 = "focus response-headers"
 F9 = "focus response-body"
+F12 = "redirects restriction mode"
 
 [keys.url]
 Enter = "submit"