Add -I as an alias for -i in rgbasm (#1056)

Co-authored-by: Rangi <35663410+Rangi42@users.noreply.github.com>

contrib/bash_compl/_rgbasm.bash

@@ -35,7 +35,7 @@ _rgbasm_completions() {
 		[b]="binary-digits:unk"
 		[D]="define:unk"
 		[g]="gfx-chars:unk"
-		[i]="include:dir"
+		[I]="include:dir"
 		[M]="dependfile:glob-*.mk *.d"
 		[o]="output:glob-*.o"
 		[P]="preinclude:glob-*.asm *.inc"

contrib/zsh_compl/_rgbasm

@@ -48,7 +48,7 @@ local args=(
 	'(-b --binary-digits)'{-b,--binary-digits}'+[Change chars for binary constants]:digit spec:'
 	'*'{-D,--define}'+[Define a string symbol]:name + value (default 1):'
 	'(-g --gfx-chars)'{-g,--gfx-chars}'+[Change chars for gfx constants]:chars spec:'
-	'(-i --include)'{-i,--include}'+[Add an include directory]:include path:_files -/'
+	'(-I --include)'{-I,--include}'+[Add an include directory]:include path:_files -/'
 	'(-M --dependfile)'{-M,--dependfile}"+[List deps in make format]:output file:_files -g '*.{d,mk}'"
 	-MG'[Assume missing files should be generated]'
 	-MP'[Add phony targets to all deps]'