use esc_html__() instead of esc_html_e()

[jedix]

When using esc_html_e(), the value is echoed directly.

In this case, it should be returned instead, which is achieved by using esc_html__(), accodring to the documentation.

[roffy2k]

This is a very important amend - it's what causes the problem with Gutenberg "update failed" error as "View article" is echoed before ANY HTML causing the json errors.