Align row is duplicated into content cells if not well formatted or using colons

[JeffDess]

Hi, I am using your plugin (great work btw :rocket:) and found this issue that happens when editing existing tables.

When importing a table, if the alignment row does not match the width of the header row, or if it is using colons to align the content of the column, then its content is put into new content cells instead of being read as the align row.

Actual

Result:

Expected

[Myzel394]

I didn't know you could use colons to indicate the alignment of the texts :O Will take a look at this!