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

tldr/gocr

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# gocr
+
+> Optical Character Recognition tool.
+> Recognize characters using its engine, and prompt the user for unknown patterns to store them in a database.
+> More information: <https://manned.org/gocr.1>.
+
+- Recognize characters in the [i]nput image and [o]utput it in the given file. Put the database ([p]) in `path/to/db_directory` (verify that the folder exists or DB usage will silently be skipped). [m]ode 130 means create + use + extend database:
+
+`gocr -m 130 -p {{path/to/db_directory}} -i {{path/to/input_image.png}} -o {{path/to/output_file.txt}}`
+
+- Recognize characters and assume all [C]haracters are numbers:
+
+`gocr -m 130 -p {{path/to/db_directory}} -i {{path/to/input_image.png}} -o {{path/to/output_file.txt}} -C "{{0..9}}"`
+
+- Recognize characters with a cert[a]inty of 100% (characters have a higher chance to be treated as unknown):
+
+`gocr -m 130 -p {{path/to/db_directory}} -i {{path/to/input_image.png}} -o {{path/to/output_file.txt}} -a 100`