some documentation fixes (mostly spelling mistakes)

c64/kernal/iec_fast/jiffydos_bittable.s

@@ -7,7 +7,7 @@
 
 // Similar tables are probably used by nearly all the disk turbo loaders,
 // either on the C64 or drive side, soometimes generated in RAM on the fly;
-// example disk turbo presented below has a veryy similar table - but the
+// example disk turbo presented below has a very similar table - but the
 // values are in reversed order:
 // - https://www.pagetable.com/?p=568
 

c64/kernal/iec_fast/load_jiffydos.s

@@ -11,7 +11,7 @@
 // see description at https://sites.google.com/site/h2obsession/CBM/C128/JiffySoft128
 //
 // For simplicity and some space savings, our routine does not check the RUN/STOP key at all;
-// the protocol is fast enough (especiallyy with modern flash mediums) that probably nobody
+// the protocol is fast enough (especially with modern flash mediums) that probably nobody
 // will want to terminate the loading.
 
 

c64/kernal/iostack/load_save_common.s

@@ -220,7 +220,7 @@ lvs_display_saving:
 	lda (FNADDR), y
 	jsr JCHROUT
 	iny
-	bne !- // jump alwayys 
+	bne !- // jump always
 !:
 	rts