Updates based on bitcoin-dot-org changes

- Blockchain guide typo (bitcoin-dot-org/#1920)
 - GetTxOut correction (bitcoin-dot-org/#1891)
 - Tx Guide (bitcoin-dot-org/#1819)
 - Vars.md (bitcoin-dot-org/#1825)
 - signrawtransaction typo

_includes/devdoc/dash-core/rpcs/rpcs/gettxout.md

@@ -50,7 +50,7 @@ The `gettxout` RPC {{summary_getTxOut}}
 - n: "`result`"
   t: "object/null"
   p: "Required<br>(exactly 1)"
-  d: "Information about the output.  If output wasn't found or if an error occurred, this will be JSON `null`"
+  d: "Information about the output.  If output wasn't found, if it was spent, or if an error occurred, this will be JSON `null`"
 
 - n: "→<br>`bestblock`"
   t: "string (hex)"

_includes/devdoc/dash-core/rpcs/rpcs/signrawtransaction.md

@@ -109,11 +109,10 @@ Sign the hex generated in the example section for the `createrawtransaction`
 RPC:
 
 {% highlight bash %}
-dash-cli -testnet signrawtransaction signrawtransaction 01000000016b4908\
-86c0198b028c6c5cb145c4eb3b1055a224a7a105aadeff41b69ec91e060100000000ffff\
-ffff0200205fa0120000001976a914485485425fa99504ec1638ac4213f3cfc9f32ef388\
-acc0a8f9be010000001976a914811eacc14db8ebb5b64486dc43400c0226b428a488ac00\
-000000
+dash-cli -testnet signrawtransaction 01000000016b490886c0198b028c6c5cb14\
+5c4eb3b1055a224a7a105aadeff41b69ec91e060100000000ffffffff0200205fa012000\
+0001976a914485485425fa99504ec1638ac4213f3cfc9f32ef388acc0a8f9be010000001\
+976a914811eacc14db8ebb5b64486dc43400c0226b428a488ac00000000
 {% endhighlight %}
 
 Result:

_includes/devdoc/guide_block_chain.md

@@ -179,7 +179,7 @@ Eventually a miner produces another block which attaches to only one of
 the competing simultaneously-mined blocks. This makes that side of
 the fork stronger than the other side.
 Assuming a fork only contains valid
-blocks, normal peers always follow the the most difficult chain
+blocks, normal peers always follow the most difficult chain
 to recreate and throw away [stale blocks][/en/glossary/stale-block]{:#term-stale-block}{:.term} belonging to shorter forks.
 (Stale blocks are also sometimes called orphans or orphan blocks<!--noref-->, but
 those terms are also used for true orphan blocks without a known parent block.)

_includes/devdoc/guide_transactions.md

@@ -47,7 +47,7 @@ invalidating previous transactions.
 ![Spending An Output](/img/dev/en-tx-overview-spending.svg)
 
 An output has an implied index number based on its location in the
-transaction---the first output is output zero. The output also has an
+transaction---the index of the first output is zero. The output also has an
 amount in duffs which it pays to a conditional pubkey script. Anyone
 who can satisfy the conditions of that pubkey script can spend up to the
 amount of duffs paid to it.

_includes/helpers/vars.md

@@ -88,7 +88,7 @@ http://opensource.org/licenses/MIT.
   p: "Required<br>(exactly 1)"
   d: "A Unix epoch time when the transaction was added to the wallet"
 
-- n: "{{DEPTH}}<br>`timerecived`"
+- n: "{{DEPTH}}<br>`timereceived`"
   t: "number (int)"
   p: "Required<br>(exactly 1)"
   d: "A Unix epoch time when the transaction was detected by the local node, or the time of the block on the local best block chain that included the transaction"