Volatile: address some feedback from review

This addresses two minor nits from @edymtt in a previous review.

Author: compnerd

Runtimes/Supplemental/Volatile/CMakeLists.txt

@@ -65,7 +65,6 @@ option(${PROJECT_NAME}_ENABLE_PRESPECIALIZATION "Enable generic metadata prespec
 add_compile_options(
   $<$<COMPILE_LANGUAGE:Swift>:-explicit-module-build>
   $<$<COMPILE_LANGUAGE:Swift>:-nostdlibimport>
-  $<$<COMPILE_LANGUAGE:Swift>:-enable-builtin-module>
   $<$<COMPILE_LANGUAGE:Swift>:-strict-memory-safety>
   "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_LIBRARY_EVOLUTION}>,$<COMPILE_LANGUAGE:Swift>>:-enable-library-evolution>"
   "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_PRESPECIALIZATION}>,$<COMPILE_LANGUAGE:Swift>>:SHELL:-Xfrontend -prespecialize-generic-metadata>")
@@ -75,7 +74,7 @@ add_compile_options(
 # LNK4217: symbol 'symbol' defined in 'filename_1.obj' is imported by 'filename_2.obj' in function 'function'
 #
 # We cannot selectively filter the linker warnings as we do not use the MSVC
-# frontned and `clang-cl` (and `clang`) currently do not support `/WX:nnnn`. As
+# frontend and `clang-cl` (and `clang`) currently do not support `/WX:nnnn`. As
 # a compromise, treat all linker warnings as errors.
 add_link_options($<$<PLATFORM_ID:Windows>:LINKER:/WX>)