Finalize release notes for 1903_RC1.

Readme.rst

@@ -23,14 +23,14 @@ Anticipated Stabilization:
 Branch Changes - release/201903
 ===============================
 
-Breaking Changes-dev
+Breaking Changes
 --------------------
 
 - Edk2ToolHelper no longer has logic for dependencies. This is easily replaced, but convenient to leave out while GenerateCapsule is being refactored to remove reliance on older compiled tools.
 - VariablePolicy changes in VaraibleSmm and AuthService will require additional libraries in DSC files (e.g. UefiVariablePolicyLib, VarCheckPolicyLib, MuVariablePolicyHelperLib).
 - gEdkiiVariableLockProtocolGuid is no longer a component of VariableServices. An alternate implementation is provided in Mu Plus repo, in the MuVarPolicyFoundationDxe driver, but it is recommended that policies be used instead.
 
-Main Changes-dev
+Main Changes
 ----------------
 
 - Modifies DxeCapsuleProcessLib so that UpdateImageProgress() returns success even if DisplayUpdateProgress() returns EFI_ERROR. This allows capsule update to proceed even if there are errors in the progress reporting.
@@ -41,7 +41,7 @@ Main Changes-dev
 - Add PCDs (gEfiMdeModulePkgTokenSpaceGuid.PcdDeferBME, gEfiMdeModulePkgTokenSpaceGuid.PcdDisableBMEonEBS) to control how BME is enabled on downstream devices and whether BME is left enabled at OS handoff.
 - Add a PCD (gEfiMdeModulePkgTokenSpaceGuid.PcdRequireIommu) to allow a platform to force I/OMMU usage for PCI DMA.
 
-Bug Fixes-dev
+Bug Fixes
 -------------
 
 - None