libbpf: fix typos in Makefile

Capitalize ABI (acronym) and fix spelling of "destination".

Fixes: 7068194 ("libbpf: Improve usability of libbpf Makefile")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: bpf@vger.kernel.org
Cc: Xin Liu <liuxin350@huawei.com>
Link: https://lore.kernel.org/r/20230722065236.17010-1-rdunlap@infradead.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

Author: rddunlap

tools/lib/bpf/Makefile

@@ -293,11 +293,11 @@ help:
 	@echo '  HINT: use "V=1" to enable verbose build'
 	@echo '  all     - build libraries and pkgconfig'
 	@echo '  clean   - remove all generated files'
-	@echo '  check   - check abi and version info'
+	@echo '  check   - check ABI and version info'
 	@echo ''
 	@echo 'libbpf install targets:'
 	@echo '  HINT: use "prefix"(defaults to "/usr/local") or "DESTDIR" (defaults to "/")'
-	@echo '        to adjust target desitantion, e.g. "make prefix=/usr/local install"'
+	@echo '        to adjust target destination, e.g. "make prefix=/usr/local install"'
 	@echo '  install          - build and install all headers, libraries and pkgconfig'
 	@echo '  install_headers  - install only headers to include/bpf'
 	@echo ''