Update MongoDB and PostgreSQL documentation (#993)

* update mongodb and postgresql md

* update pg service

images/win/scripts/Installers/Validate-PostgreSQL.ps1

@@ -1,35 +1,17 @@
-$PGUSER="postgres"
-function Validate-PostgreSQL {
-    $pgready = Start-Process -FilePath pg_isready -Wait -PassThru
-    $exitCode = $pgready.ExitCode
-    if ($exitCode -eq 0)
-    {
-        Write-Host -Object "PostgreSQL has been successfully installed."
-    }
-    else
-    {
-        Write-Host -Object "PostgreSQL is not ready. Exitcode: $exitCode"
-        exit $exitCode
-    }
+$pgReady = Start-Process -FilePath pg_isready -Wait -PassThru
+$exitCode = $pgReady.ExitCode
+
+if ($exitCode -eq 0)
+{
+    Write-Host -Object "PostgreSQL has been successfully installed."
+}
+else
+{
+    Write-Host -Object "PostgreSQL is not ready. Exitcode: $exitCode"
+    exit $exitCode
 }
 
-$paths = (Get-CimInstance Win32_Service -Filter "Name LIKE 'postgresql-%'").PathName
-$pgservice = (Get-CimInstance Win32_Service -Filter "Name LIKE 'postgresql-%'").Name
-$pgroot = $paths.split('"')[1].replace("\bin\pg_ctl.exe", "")
-$psqlVersion = pg_config --version | Out-String
-Validate-PostgreSQL
-
-# Adding description of the software to Markdown
-$SoftwareName = "PostgreSQL"
-$Description = @"
-_Version:_ $psqlVersion<br/>
-_Default Path:_ $pgroot<br/>
-_User:_ $env:PGUSER<br/>
-_Password:_ $env:PGPASSWORD
-"@
-
-Add-SoftwareDetailsToMarkdown -SoftwareName $SoftwareName -DescriptionMarkdown $Description
-
 #Stop and disable PostgreSQL service
-Stop-Service -Name $pgservice
-Set-Service $pgservice -StartupType Disabled
+$pgService = Get-Service -Name postgresql*
+Stop-Service -InputObject $pgService
+Set-Service -InputObject $pgService -StartupType Disabled