fix: windows friendly daemon help

tweak the daemon --help output to use escaped double quotes instead
of single quotes so the same command can be used on windows.

fixes: #2034

License: MIT
Signed-off-by: Oli Evans <oli@tableflip.io>

cmd/ipfs/daemon.go

@@ -100,8 +100,8 @@ ipfs supports passing arbitrary headers to the API and Gateway. You can
 do this by setting headers on the API.HTTPHeaders and Gateway.HTTPHeaders
 keys:
 
-  ipfs config --json API.HTTPHeaders.X-Special-Header '["so special :)"]'
-  ipfs config --json Gateway.HTTPHeaders.X-Special-Header '["so special :)"]'
+  ipfs config --json API.HTTPHeaders.X-Special-Header "[\"so special :)\"]"
+  ipfs config --json Gateway.HTTPHeaders.X-Special-Header "[\"so special :)\"]"
 
 Note that the value of the keys is an _array_ of strings. This is because
 headers can have more than one value, and it is convenient to pass through
@@ -111,9 +111,9 @@ CORS Headers (for API)
 
 You can setup CORS headers the same way:
 
-  ipfs config --json API.HTTPHeaders.Access-Control-Allow-Origin '["example.com"]'
-  ipfs config --json API.HTTPHeaders.Access-Control-Allow-Methods '["PUT", "GET", "POST"]'
-  ipfs config --json API.HTTPHeaders.Access-Control-Allow-Credentials '["true"]'
+  ipfs config --json API.HTTPHeaders.Access-Control-Allow-Origin "[\"example.com\"]"
+  ipfs config --json API.HTTPHeaders.Access-Control-Allow-Methods "[\"PUT\", \"GET\", \"POST\"]"
+  ipfs config --json API.HTTPHeaders.Access-Control-Allow-Credentials "[\"true\"]"
 
 Shutdown