fix(config_help): jump to section heading via psub + --jump-target

--pattern matched the first textual occurrence of the keyword anywhere
in the document. Replace with psub to make bat's output seekable, then
use --jump-target with the line number resolved by grep against heading
lines only (^#+.*keyword), so keyword jumps land on the actual section
header rather than an example or body reference.

functions/config_help.fish

@@ -51,27 +51,25 @@ function config_help --description 'Open the offline fish shell configuration ma
     # bat emits: ESC[<color>m# ... so delimiter ^(\x1b\[[0-9;]*m)+# matches
     # any 8/24-bit color sequence before a '#', theme-agnostic.
     # Section nav: Space (next), ^ (previous), Alt+u (section list sidebar).
-    # Keyword jump uses --pattern which positions at the first search match.
+    # psub creates a seekable temp file so --jump-target works on bat output.
     if type -q ov; and type -q bat
         set -l ov_args \
             --section-delimiter "^(\x1b\[[0-9;]*m)+#" \
             --section-header
-        if test -n "$argv[1]"
-            set -a ov_args --pattern "$argv[1]"
+        if test $start_line -gt 1
+            set -a ov_args --jump-target $start_line
         end
-        bat --color=always --style=plain --language=markdown "$doc_file" \
-            | ov $ov_args
+        ov $ov_args (bat --color=always --style=plain --language=markdown "$doc_file" | psub)
 
     # ov alone: section navigation on raw Markdown; no code highlighting.
     else if type -q ov
         set -l ov_args \
             --section-delimiter "^#" \
-            --section-header \
-            "$doc_file"
-        if test -n "$argv[1]"
-            set -a ov_args --pattern "$argv[1]"
+            --section-header
+        if test $start_line -gt 1
+            set -a ov_args --jump-target $start_line
         end
-        ov $ov_args
+        ov $ov_args "$doc_file"
 
     # bat alone: syntax highlighting with built-in paging; no line jump.
     else if type -q bat