Small fixes leftover from V16 merge.

[ Merge of http://go/wvgerrit/93505 ]

During the merge process there were a few CL comments (ag/10122083)
that were not able to be addressed.  Most changes in the CL are
spelling / grammar corrections.

Bug: 148907684
Bug: 141247171
Test: CDM unit tests
Change-Id: I9a8648525bbe5ed319521ebf01741a958ab69ae2

libwvdrmengine/cdm/core/include/certificate_provisioning.h

@@ -76,8 +76,8 @@ class CertificateProvisioning {
   std::unique_ptr<ServiceCertificate> service_certificate_;
 
   // Indicates whether OEMCrypto supports core messages, and whether the
-  // CDM should expect a core message in the response.  This is primarly
-  // used to distinguish between v16+ OEMCrypto or and earlier version.
+  // CDM should expect a core message in the response.  This is primarily
+  // used to distinguish between v16+ OEMCrypto or an earlier version.
   // Assume core messages are supported, and check if OEMCrypto populates
   // the core message field when calling PrepAndSignProvisioningRequest().
   bool supports_core_messages_ = true;