Move pages under tldr, lint run.sh, update docs

tldr/pbmtext

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pbmtext
+
+> Render text as a PBM image.
+> See also: `pbmtextps`.
+> More information: <https://netpbm.sourceforge.net/doc/pbmtext.html>.
+
+- Render a single line of text as a PBM image:
+
+`pbmtext "{{Hello World!}}" > {{path/to/output.pbm}}`
+
+- Render multiple lines of text as a PBM image:
+
+`echo "{{Hello
+World!}}" | pbmtext > {{path/to/output.pbm}}`
+
+- Render text using a custom font supplied as a PBM file:
+
+`pbmtext -font {{path/to/font.pbm}} "{{Hello World!}}" > {{path/to/output.pbm}}`
+
+- Specify the number of pixels between characters and lines:
+
+`echo "{{Hello
+World!}}" | pbmtext -space {{3}} -lspace {{10}} > {{path/to/output.pbm}}`