Do not trim quotes in findDirectivesInScriptCommand (ddev#3051)

In 2ff4f0b, triming was added for readability of file paths but the code
does not actually depend on quotes around paths. It only cares for
commas to differentiate multiple paths in a given directive.

This partially reverts:
    commit 2ff4f0b
    Author: Andreas Hager <3351175+andreashager@users.noreply.github.com>
    Date:   Tue Dec 29 05:47:40 2020 +0100

        Create new HeidiSQL command for Windows and WSL2 (ddev#2679)

cmd/ddev/cmd/commands.go

@@ -296,7 +296,7 @@ func findDirectivesInScriptCommand(script string) map[string]string {
 		if strings.HasPrefix(line, "## ") && strings.Contains(line, ":") {
 			line = strings.Replace(line, "## ", "", 1)
 			parts := strings.SplitN(line, ":", 2)
-			parts[1] = strings.Trim(parts[1], " \"'")
+			parts[1] = strings.Trim(parts[1], " ")
 			directives[parts[0]] = parts[1]
 		}
 	}

cmd/ddev/cmd/global_dotddev_assets/commands/host/heidisql

@@ -5,7 +5,7 @@
 ## Usage: heidisql
 ## Example: "ddev heidisql"
 ## OSTypes: windows,wsl2
-## HostBinaryExists: "/mnt/c/Program Files/HeidiSQL/heidisql.exe,C:\Program Files\HeidiSQL\Heidisql.exe"
+## HostBinaryExists: /mnt/c/Program Files/HeidiSQL/heidisql.exe,C:\Program Files\HeidiSQL\Heidisql.exe
 
 arguments="--host=127.0.0.1 --port=${DDEV_HOST_DB_PORT} --user=root --password=root --description=${DDEV_SITENAME}"