enc presets: remove L1 comment and refactor wording

target/encoding_presets.ini

@@ -1,13 +1,12 @@
-; Keys expands to values in your codes, no magic merging will be done (PR if you feel daring)
 [MACROS]
 4K: -vf scale=3840:-2:flags=neighbor
 COPY: -c:a copy
 OPUS: -c:a libopus -b:a 128k
 YUV444: -pix_fmt yuv444p
 
 ; None of this is hardcoded, have fun!
-; Keys must be in caps (PR if you care to fix that)
-; You can have two aliases per category
+; They must be in all caps, to differientiate from non macros
+; You must specify two aliases per category:
 [H264/AVC]
 NVENC:     -c:v h264_nvenc -preset p7 -rc vbr -b:v 250M -cq 14
 AMF:       -c:v h264_amf -quality quality -qp_i 16 -qp_p 18 -qp_b 22