[FAB-13932] Fix misspelling of "commerical"

Fix misspeling of "commerical" to "commercial"

Change-Id: I91308b10753b8b85282f2beaab0cc1aa6a23851f
Signed-off-by: Daisuke IIZUKA <daisuke.iizuka.ag@hitachi.com>

Author: Daisuke IIZUKA

docs/source/developapps/smartcontract.md

@@ -62,7 +62,7 @@ contains the transaction definitions for commercial paper -- **issue**, **buy**
 and **redeem**. It's these transactions that bring commercial papers into
 existence and move them through their lifecycle. We'll examine these
 [transactions](#transaction-definition) soon, but for now notice how
-`CommericalPaperContract` extends the Hyperledger Fabric `Contract`
+`CommercialPaperContract` extends the Hyperledger Fabric `Contract`
 [class](https://fabric-shim.github.io/release-1.4/fabric-contract-api.Contract.html).
 This built-in class, and the `Context` class, were brought into scope earlier:
 

docs/source/identity/identity.md

@@ -222,7 +222,7 @@ it is inherently not capable of providing SSL certificates for general/automatic
 in browsers. However, because **some** CA must be used to manage identity
 (even in a test environment), Fabric CA can be used to provide and manage
 certificates. It is also possible --- and fully appropriate --- to use a
-public/commerical root or intermediate CA to provide identification.
+public/commercial root or intermediate CA to provide identification.
 
 If you're interested, you can read a lot more about Fabric CA
 [in the CA documentation section](http://hyperledger-fabric-ca.readthedocs.io/).