docs: Add missing modules to $all in config docs (#3075)

* Add cobol to $all in config docs

* Undo whitespace changes

* Add singluarity/rlang, move lua to correct location

docs/config/README.md

@@ -190,6 +190,7 @@ format = """
 $username\
 $hostname\
 $shlvl\
+$singularity\
 $kubernetes\
 $directory\
 $vcsh\
@@ -202,6 +203,7 @@ $hg_branch\
 $docker_context\
 $package\
 $cmake\
+$cobol\
 $dart\
 $deno\
 $dotnet\
@@ -213,6 +215,7 @@ $helm\
 $java\
 $julia\
 $kotlin\
+$lua\
 $nim\
 $nodejs\
 $ocaml\
@@ -220,6 +223,7 @@ $perl\
 $php\
 $purescript\
 $python\
+$rlang\
 $red\
 $ruby\
 $rust\
@@ -240,7 +244,6 @@ $crystal\
 $custom\
 $cmd_duration\
 $line_break\
-$lua\
 $jobs\
 $battery\
 $time\