Use proper style to document long opts

Correct mandoc style is to use `Fl \-`, not `Fl Fl`, apparently.

man/rgblink.1

@@ -54,34 +54,34 @@ can be a path to a file, or
 to read from standard input.
 .Pp
 Note that options can be abbreviated as long as the abbreviation is unambiguous:
-.Fl Fl verb
+.Fl \-verb
 is
-.Fl Fl verbose ,
+.Fl \-verbose ,
 but
-.Fl Fl ver
+.Fl \-ver
 is invalid because it could also be
-.Fl Fl version .
+.Fl \-version .
 The arguments are as follows:
 .Bl -tag -width Ds
-.It Fl d , Fl Fl dmg
+.It Fl d , Fl \-dmg
 Enable DMG mode.
 Prohibit the use of sections that doesn't exist on a DMG, such as VRAM bank 1.
 This option automatically enables
 .Fl w .
-.It Fl l Ar linker_script , Fl Fl linkerscript Ar linker_script
+.It Fl l Ar linker_script , Fl \-linkerscript Ar linker_script
 Specify a linker script file that tells the linker how sections must be placed in the ROM.
 The attributes assigned in the linker script must be consistent with any assigned in the code.
 See
 .Xr rgblink 5
 for more information about the linker script format.
-.It Fl M , Fl Fl no-sym-in-map
+.It Fl M , Fl \-no-sym-in-map
 If specified, the map file will not list symbols, only sections.
-.It Fl m Ar map_file , Fl Fl map Ar map_file
+.It Fl m Ar map_file , Fl \-map Ar map_file
 Write a map file to the given filename, listing how sections and symbols were assigned.
-.It Fl n Ar sym_file , Fl Fl sym Ar sym_file
+.It Fl n Ar sym_file , Fl \-sym Ar sym_file
 Write a symbol file to the given filename, listing the address of all exported symbols.
 Several external programs can use this information, for example to help debugging ROMs.
-.It Fl O Ar overlay_file , Fl Fl overlay Ar overlay_file
+.It Fl O Ar overlay_file , Fl \-overlay Ar overlay_file
 If specified, sections will be overlaid "on top" of the ROM image
 .Ar overlay_file :
 empty space between sections will be filled by the corresponding bytes from
@@ -90,15 +90,15 @@ This is useful to patch an existing ROM.
 Note that all sections must be fixed (forced bank
 .Sy and
 address)!
-.It Fl o Ar out_file , Fl Fl output Ar out_file
+.It Fl o Ar out_file , Fl \-output Ar out_file
 Write the ROM image to the given file.
-.It Fl p Ar pad_value , Fl Fl pad Ar pad_value
+.It Fl p Ar pad_value , Fl \-pad Ar pad_value
 When inserting padding between sections, pad with this value.
 Has no effect if
 .Fl O
 is specified.
 The default is 0.
-.It Fl S Ar spec , Fl Fl scramble Ar spec
+.It Fl S Ar spec , Fl \-scramble Ar spec
 Enables a different
 .Dq scrambling
 algorithm for placing sections.
@@ -106,22 +106,22 @@ See
 .Sx Scrambling algorithm
 below for an explanation and a description of
 .Ar spec .
-.It Fl s Ar symbol , Fl Fl smart Ar symbol
+.It Fl s Ar symbol , Fl \-smart Ar symbol
 This option is ignored.
 It was supposed to perform smart linking but fell into disrepair, and so has been removed.
 It will be reimplemented at some point.
-.It Fl t , Fl Fl tiny
+.It Fl t , Fl \-tiny
 Expand the ROM0 section size from 16 KiB to the full 32 KiB assigned to ROM.
 ROMX sections that are fixed to a bank other than 1 become errors, other ROMX sections are treated as ROM0.
 Useful for ROMs that fit in 32 KiB.
-.It Fl V , Fl Fl version
+.It Fl V , Fl \-version
 Print the version of the program and exit.
-.It Fl v , Fl Fl verbose
+.It Fl v , Fl \-verbose
 Verbose: enable printing more information to standard error.
-.It Fl w , Fl Fl wramx
+.It Fl w , Fl \-wramx
 Expand the WRAM0 section size from 4 KiB to the full 8 KiB assigned to WRAM.
 WRAMX sections that are fixed to a bank other than 1 become errors, other WRAMX sections are treated as WRAM0.
-.It Fl x , Fl Fl nopad
+.It Fl x , Fl \-nopad
 Disables padding the end of the final file.
 This option automatically enables
 .Fl t .