sanitycheck: Minor internal documentation fixes

Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>

scripts/sanitycheck

diff --git a/scripts/sanitycheck b/scripts/sanitycheck
index 840be62..a7674d5 100755
--- a/scripts/sanitycheck
+++ b/scripts/sanitycheck
@@ -754,8 +754,8 @@
         @param directory Absolute path to working directory, will be passed
             to make -C
         @param outdir Absolute path to output directory, will be passed to
-            Kbuild via -O=<path>
-        @param args Extra command line arguments to pass to 'make', typically
+            cmake via -B=<path>
+        @param args Extra command line arguments to pass to 'cmake', typically
             environment variables or specific Make goals
         """
         self._add_goal(outdir)
@@ -782,8 +782,7 @@
             to make -C
         @param outdir Absolute path to output directory, will be passed to
             Kbuild via -O=<path>
-        @param args Extra command line arguments to pass to 'make', typically
-            environment variables. Do not pass specific Make goals here.
+        @param args Extra cache entries to define in CMake.
         @param timeout Maximum length of time QEMU session should be allowed
             to run before automatically killing it. Default is 30 seconds.
         """