White space formatting fixes

Closes: <https://github.com/nginx/unit/pull/1062>

tools/setup-unit

@@ -77,9 +77,9 @@ SYNOPSIS
     Subcommands
         ├── cmd          [-h]
         ├── ctl          [-h] [-s SOCK] SUBCOMMAND [ARGS]
-        │   ├── edit     [-h] PATH
-        │   ├── http     [-h] [-c CURLOPT] METHOD PATH
-        │   └── insert   [-h] PATH INDEX
+        │   ├── edit     [-h] PATH
+        │   ├── http     [-h] [-c CURLOPT] METHOD PATH
+        │   └── insert   [-h] PATH INDEX
         ├── freeport     [-h]
         ├── json-ins     [-hn] JSON INDEX
         ├── os-probe     [-h]
@@ -87,8 +87,8 @@ SYNOPSIS
         ├── repo-config  [-hn] [PKG-MANAGER OS-NAME OS-VERSION]
         ├── restart      [-hls]
         ├── sock         [-h] SUBCOMMAND [ARGS]
-        │   ├── filter   [-chs]
-        │   └── find     [-h]
+        │   ├── filter   [-chs]
+        │   └── find     [-h]
         └── welcome      [-hn]
 
 DESCRIPTION

tools/unitc

@@ -1,6 +1,6 @@
 #!/bin/bash
 # unitc - a curl wrapper for configuring NGINX Unit
-# https://github.com/nginx/unit/tree/master/tools
+# https://github.com/nginx/unit/tree/master/tools
 # NGINX, Inc. (c) 2023
 
 # Defaults
@@ -292,7 +292,7 @@ else
 			exit 1
 		fi
 		NEW_ELEMENT=$(cat ${CONF_FILES[@]})
-		echo $NEW_ELEMENT | jq > /dev/null || exit $? # Test the input is valid JSON before proceeding
+		echo $NEW_ELEMENT | jq > /dev/null || exit $? # Test the input is valid JSON before proceeding
 		OLD_ARRAY=$($RPC_CMD curl -s $UNIT_CTRL$URI)
 		if [ "$(echo $OLD_ARRAY | jq -r type)" = "array" ]; then
 			echo $OLD_ARRAY | jq ". |= [$NEW_ELEMENT] + ." | $RPC_CMD curl -X PUT --data-binary @- $UNIT_CTRL$URI 2> /tmp/${0##*/}.$$ | $OUTPUT