Fix warnings in docs build (#4241)

doc/use_apps/rpc_api.rst

@@ -2,7 +2,7 @@ RPC API
 =======
 
 Application RPCs are exposed under ``/app`` and require authentication with a valid user identity.
-You can read what application endpoints may look like, as generated by the :ref:`example C++ logging app <build_apps/example_cpp>`, in :doc:`/build_apps/example_rpc_api`.
+You can read what application endpoints may look like, as generated by the :doc:`:example C++ logging app <build_apps/example_cpp>`, in :doc:`/build_apps/example_rpc_api`.
 
 Built-ins
 ----------

include/ccf/ds/quote_info.h

@@ -19,8 +19,9 @@ namespace ccf
     QuoteFormat,
     {{QuoteFormat::oe_sgx_v1, "OE_SGX_v1"},
      {QuoteFormat::insecure_virtual, "Insecure_Virtual"},
-     {QuoteFormat::amd_sev_snp_v1, "AMD_SEV_SNP_v1"}})
+     {QuoteFormat::amd_sev_snp_v1, "AMD_SEV_SNP_v1"}});
 
+  /// Describes a quote (attestation) from trusted hardware
   struct QuoteInfo
   {
     /// Quote format