Merge pull request #3916 from gratipay/README-tweak

modifed payment-instructions.json section in README

README.md

@@ -481,7 +481,7 @@ charts page used to use this.
 an object giving a point-in-time snapshot of Gratipay. The
 [stats](https://gratipay.com/about/stats.html) page displays the same info.
 
-**/`%username`/public.json**
+**/`~username`/public.json**
 ([example](https://gratipay.com/Gratipay/public.json),
 [source](https://github.com/gratipay/gratipay.com/blob/master/www/~/%25username/public.json.spt))&mdash;<i>public</i>&mdash;Returns an object with these keys:
 
@@ -503,7 +503,7 @@ an object giving a point-in-time snapshot of Gratipay. The
           - `undefined` (key not present)&mdash;no OpenStreetMap account connected
           - `http://www.openstreetmap.org/user/%openstreetmap_username`
 
-**/`%username`/payment-instructions.json**
+**/`~username`/payment-instructions.json**
 ([source](https://github.com/gratipay/gratipay.com/www/~/%username/payment-instructions.json.spt))&mdash;*private*&mdash;Responds
 to `GET` with an array of objects representing your current payment
 instructions. A payment instruction is created when a ~user instructs Gratipay
@@ -523,11 +523,11 @@ E.g.:
 Request
 
 ```
-curl -L https://gratipay.com/username/payment-instructions.json \
-     -u $userid:$api_key \
-     -X POST \
-     -d '[{"amount": "1.00", "team_slug": "foobar"}]' \
-     -H "Content-Type: application/json"
+curl https://gratipay.com/~username/payment-instructions.json \
+    -u $userid:$api_key \
+    -X POST \
+    -d '[{"amount": "1.00", "team_slug": "foobar"}]' \
+    -H "Content-Type: application/json"
 ```
 
 Response