Fixing linter error in doc

examples/tv-casting-app/APIs.md

@@ -71,7 +71,7 @@ Next, you're ready to:
 
 The Casting Client is expected to consume the Matter TV Casting library built
 for its respective platform which implements the APIs described in this
-document. Refer to the tv-casting-app READMEs for [Linux](linux/README.md),
+document. Refer to the tv-casting-app README for [Linux](linux/README.md),
 [Android](android/README.md) and [iOS](darwin/TvCasting/README.md) to understand
 how to build and consume each platform's specific libraries.
 
@@ -152,7 +152,7 @@ client's lifecycle:
     section for details on commissioning data.
 
     On Linux, define a function `InitCommissionableDataProvider` to initialize
-    initialize a `LinuxCommissionableDataProvider` that can provide the required
+    intialize a `LinuxCommissionableDataProvider` that can provide the required
     values to the CastingApp.
 
     ```c++
@@ -213,7 +213,7 @@ client's lifecycle:
     etc. and implements a way to sign messages when called upon by the Matter TV
     Casting Library as part of the
     [Device Attestation process](https://github.com/CHIP-Specifications/connectedhomeip-spec/blob/master/src/device_attestation/Device_Attestation_Specification.adoc)
-    during commissioning.
+    during commissoning.
 
     On Linux, implement a define a `dacProvider` to provide the Casting Client's
     Device Attestation Credentials, by implementing a