x86/Kconfig: Fix spellos & punctuation

Fix spelling (reported by codespell) & punctuation in arch/x86/ Kconfig.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230124181753.19309-1-rdunlap@infradead.org

arch/x86/Kconfig

@@ -1502,7 +1502,7 @@ config X86_5LEVEL
 	depends on X86_64
 	help
 	  5-level paging enables access to larger address space:
-	  upto 128 PiB of virtual address space and 4 PiB of
+	  up to 128 PiB of virtual address space and 4 PiB of
 	  physical address space.
 
 	  It will be supported by future Intel CPUs.
@@ -2609,8 +2609,8 @@ config CALL_THUNKS_DEBUG
 	  a noisy dmesg about callthunks generation and call patching for
 	  trouble shooting. The debug prints need to be enabled on the
 	  kernel command line with 'debug-callthunks'.
-	  Only enable this, when you are debugging call thunks as this
-	  creates a noticable runtime overhead. If unsure say N.
+	  Only enable this when you are debugging call thunks as this
+	  creates a noticeable runtime overhead. If unsure say N.
 
 config CPU_IBPB_ENTRY
 	bool "Enable IBPB on kernel entry"