bpftool: Fix indent in option lists in the documentation

Mixed indentation levels in the lists of options in bpftool's
documentation produces some unexpected results. For the "bpftool" man
page, it prints a warning:

$ make -C bpftool.8
GEN bpftool.8
<stdin>:26: (ERROR/3) Unexpected indentation.

For other pages, there is no warning, but it results in a line break
appearing in the option lists in the generated man pages.

RST paragraphs should have a uniform indentation level. Let's fix it.

Fixes: c07ba629df97 ("tools: bpftool: Update and synchronise option list in doc and help msg")
Fixes: 8cc8c6357c8f ("tools: bpftool: Document and add bash completion for -L, -B options")
Signed-off-by: Quentin Monnet <[e-mail]>
Signed-off-by: Andrii Nakryiko <[e-mail]>
Link: https://lore.kernel.org/bpf/[e-mail]

tools/bpf/bpftool/Documentation/bpftool-btf.rst

···
 	**bpftool** [*OPTIONS*] **btf** *COMMAND*
 
 	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | {**-d** | **--debug** } |
-		{ **-B** | **--base-btf** } }
+	{ **-B** | **--base-btf** } }
 
 	*COMMANDS* := { **dump** | **help** }
 

tools/bpf/bpftool/Documentation/bpftool-cgroup.rst

···
 	**bpftool** [*OPTIONS*] **cgroup** *COMMAND*
 
 	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } |
-		{ **-f** | **--bpffs** } }
+	{ **-f** | **--bpffs** } }
 
 	*COMMANDS* :=
 	{ **show** | **list** | **tree** | **attach** | **detach** | **help** }

tools/bpf/bpftool/Documentation/bpftool-gen.rst

···
 	**bpftool** [*OPTIONS*] **gen** *COMMAND*
 
 	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } |
-		{ **-L** | **--use-loader** } }
+	{ **-L** | **--use-loader** } }
 
 	*COMMAND* := { **object** | **skeleton** | **help** }
 

tools/bpf/bpftool/Documentation/bpftool-link.rst

···
 	**bpftool** [*OPTIONS*] **link** *COMMAND*
 
 	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } |
-		{ **-f** | **--bpffs** } | { **-n** | **--nomount** } }
+	{ **-f** | **--bpffs** } | { **-n** | **--nomount** } }
 
 	*COMMANDS* := { **show** | **list** | **pin** | **help** }
 

tools/bpf/bpftool/Documentation/bpftool-map.rst

···
 	**bpftool** [*OPTIONS*] **map** *COMMAND*
 
 	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } |
-		{ **-f** | **--bpffs** } | { **-n** | **--nomount** } }
+	{ **-f** | **--bpffs** } | { **-n** | **--nomount** } }
 
 	*COMMANDS* :=
-	{ **show** | **list** | **create** | **dump** | **update** | **lookup** | **getnext**
-	| **delete** | **pin** | **help** }
+	{ **show** | **list** | **create** | **dump** | **update** | **lookup** | **getnext** |
+	**delete** | **pin** | **help** }
 
 MAP COMMANDS
 =============

tools/bpf/bpftool/Documentation/bpftool-prog.rst

···
 	**bpftool** [*OPTIONS*] **prog** *COMMAND*
 
 	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } |
-		{ **-f** | **--bpffs** } | { **-m** | **--mapcompat** } | { **-n** | **--nomount** } |
-		{ **-L** | **--use-loader** } }
+	{ **-f** | **--bpffs** } | { **-m** | **--mapcompat** } | { **-n** | **--nomount** } |
+	{ **-L** | **--use-loader** } }
 
 	*COMMANDS* :=
-	{ **show** | **list** | **dump xlated** | **dump jited** | **pin** | **load**
-	| **loadall** | **help** }
+	{ **show** | **list** | **dump xlated** | **dump jited** | **pin** | **load** |
+	**loadall** | **help** }
 
 PROG COMMANDS
 =============

tools/bpf/bpftool/Documentation/bpftool.rst

···
 	*OBJECT* := { **map** | **program** | **cgroup** | **perf** | **net** | **feature** }
 
 	*OPTIONS* := { { **-V** | **--version** } |
-		{ **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } }
+	{ **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } }
 
 	*MAP-COMMANDS* :=
 	{ **show** | **list** | **create** | **dump** | **update** | **lookup** | **getnext** |
-		**delete** | **pin** | **event_pipe** | **help** }
+	**delete** | **pin** | **event_pipe** | **help** }
 
 	*PROG-COMMANDS* := { **show** | **list** | **dump jited** | **dump xlated** | **pin** |
-		**load** | **attach** | **detach** | **help** }
+	**load** | **attach** | **detach** | **help** }
 
 	*CGROUP-COMMANDS* := { **show** | **list** | **attach** | **detach** | **help** }