chore: Correct typos in build scripts

Author: alerque

bootstrap.sh

@@ -24,11 +24,11 @@ fi
 # Autoreconf uses a perl script to inline includes from Makefile.am into
 # Makefile.in before ./configure is ever run even once ... which typically means
 # AX_AUTOMAKE_MACROS forfeit access to substitutions or conditional logic
-# because they enter the picture after those steps. We're sententially using the
+# because they enter the picture after those steps. We're intentionally using the
 # expanded value of @INC_AMINCLUDE@ directly so the include will be inlined. To
 # bootstrap we must pre-seed an empty file to avoid a 'file not found' error on
 # first run. Subsequently running ./configure will generate the correct content
-# based on the configuration flags and also get re-inline into Makefile.in.
+# based on the configuration flags and also get re-inlined into Makefile.in.
 touch aminclude.am
 
 autoreconf --install