Simplify/ Clean up XML of a DOCX word document

I have a Microsoft Word Document (docx) and I use Open XML SDK 2.0 Productivity Tool to generate C# code from it.

I want to programmatically insert some database values to the document. For this I typed in simple text like [[place holder 1]] in the points where my program should replace the placeholders with its database values.

Unfortunately the XML output is in some kind of mess. E.g. I have a table with two neighboring cells, which shouldn't distinguish apart from its placeholder. But one of the placeholders is split into several runs.

[[good place holder]]

<w:tc xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">
  <w:tcPr>
    <w:tcW w:w="1798" w:type="dxa" />
    <w:shd w:val="clear" w:color="auto" w:fill="auto" />
  </w:tcPr>
  <w:p w:rsidRPr="008C2E16" w:rsidR="001F54BF" w:rsidP="000D7B67" w:rsidRDefault="0009453E">
    <w:pPr>
      <w:spacing w:after="0" w:line="240" w:lineRule="auto" />
      <w:rPr>
        <w:rFonts w:cstheme="minorHAnsi" />
        <w:sz w:val="20" />
        <w:szCs w:val="20" />
      </w:rPr>
    </w:pPr>
    <w:r w:rsidRPr="0009453E">
      <w:rPr>
        <w:rFonts w:cstheme="minorHAnsi" />
        <w:sz w:val="20" />
        <w:szCs w:val="20" />
      </w:rPr>
      <w:t>[[good place holder]]</w:t>
    </w:r>
  </w:p>
</w:tc>

versus [[bad place holder]]

<w:tc xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">
  <w:tcPr>
    <w:tcW w:w="1799" w:type="dxa" />
    <w:shd w:val="clear" w:color="auto" w:fill="auto" />
  </w:tcPr>
  <w:p w:rsidRPr="008C2E16" w:rsidR="001F54BF" w:rsidP="000D7B67" w:rsidRDefaul