Jamil Bailony a54738a1f0
add five books and create two sections (#6845)
* add five books and create two sections

* fix black lines

* fix blank lines

* add authors to a book of  PostgreSQL section

* fix source type direction with rtl

* replace Right-to-Left mark unicode with HTML code

* fix DB & DBMS and Vue.js index links

* fix using encoded urls

* remove space before RLM

* fix rlm position and change Video to YouTube
2022-06-18 12:29:52 -04:00
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