Fix spelling on claimant model landing page (#3777)

Author: Hayden B

docs/claimantmodel/README.md

@@ -3,7 +3,7 @@
 The Claimant Model describes the set of relationships involved where *trust* is a factor.
 The concepts are described over a number of documents, which are best read in this order:
 
-1. [Claimant Model: In-Depth](Book.md): The Claimant Model introduced in accessible prose, though somehwat verbosely
+1. [Claimant Model: In-Depth](Book.md): The Claimant Model introduced in accessible prose, though somewhat verbosely
 1. [Claimant Model](CoreModel.md): The core Claimant Model forms the foundation for the other documents. Quite concise.
 1. [Claimant Model: Logs](Logs.md): Verifiable Log Transparency described using the Claimant Model
 1. [Claimant Model: Maps](Maps.md): Verifiable Map Transparency described using the Claimant Model