[Docs] fix and improve REST documentation

- fix bad formatting of getutxos
- added getztxos example
- fix different command syntax

doc/REST-interface.md

@@ -7,7 +7,7 @@ Supported API
 -------------
 
 ####Transactions
-`GET /rest/tx/TX-HASH.{bin|hex|json}`
+`GET /rest/tx/<TX-HASH>.<bin|hex|json>`
 
 Given a transaction hash,
 Returns a transaction, in binary, hex-encoded binary or JSON formats.
@@ -15,8 +15,8 @@ Returns a transaction, in binary, hex-encoded binary or JSON formats.
 For full TX query capability, one must enable the transaction index via "txindex=1" command line / configuration option.
 
 ####Blocks
-`GET /rest/block/BLOCK-HASH.{bin|hex|json}`
-`GET /rest/block/notxdetails/BLOCK-HASH.{bin|hex|json}`
+`GET /rest/block/<BLOCK-HASH>.<bin|hex|json>`
+`GET /rest/block/notxdetails/<BLOCK-HASH>.<bin|hex|json>`
 
 Given a block hash,
 Returns a block, in binary, hex-encoded binary or JSON formats.
@@ -46,12 +46,38 @@ Only supports JSON as output format.
 * verificationprogress : (numeric) estimate of verification progress [0..1]
 * chainwork : (string) total amount of work in active chain, in hexadecimal
 
-`GET /rest/getutxos`
+####Query UTXO set
+`GET /rest/getutxos.<bin|hex|json>`
 
-The getutxo command allows querying of the UTXO set given a set of of outpoints.
+The getutxo command allows querying of the UTXO set given a set of outpoints.
 See BIP64 for input and output serialisation:
 https://github.com/bitcoin/bips/blob/master/bip-0064.mediawiki
 
+Example:
+```
+$ curl --data '{"checkmempool":true,"outpoints":[{"txid":"b2cdfd7b89def827ff8af7cd9bff7627ff72e5e8b0f71210f92ea7a4000c5d75","n":0}]}' localhost:18332/rest/getutxos.json 2>/dev/null | json_pp
+{
+   "chaintipHash" : "00000000fb01a7f3745a717f8caebee056c484e6e0bfe4a9591c235bb70506fb",
+   "chainHeight" : 325347,
+   "utxos" : [
+      {
+         "scriptPubKey" : {
+            "addresses" : [
+               "mi7as51dvLJsizWnTMurtRmrP8hG2m1XvD"
+            ],
+            "type" : "pubkeyhash",
+            "hex" : "76a9141c7cebb529b86a04c683dfa87be49de35bcf589e88ac",
+            "reqSigs" : 1,
+            "asm" : "OP_DUP OP_HASH160 1c7cebb529b86a04c683dfa87be49de35bcf589e OP_EQUALVERIFY OP_CHECKSIG"
+         },
+         "value" : 8.8687,
+         "height" : 2147483647,
+         "txvers" : 1
+      }
+   ],
+   "bitmap" : "1"
+}
+```
 
 Risks
 -------------