[readme] Add 2 solutions of bold small caps provided by Overleaf support team,...

[readme] Add 2 solutions of bold small caps provided by Overleaf support team, add description and minimal sample to this problem

README.md

@@ -21,9 +21,23 @@ Overleaf: In local, run `zip -r thesis.zip * -x '*.git*' -x 'Makefile' -x 'main.
 
 ## Known issues
 
-- Bold small caps for author's name is only bold when using TeX Live version >= 2020 (tested on Overleaf). To get around of this:
-  - Use older version of TeX Live. For Overleaf, change it in project settings, 2019 works fine.
-  - Or use normal small caps, remove `\textbf` before `\textsc{\@author}` in `tlsflyleaf.sty` (2 locations).
+- Bold small caps for author's name is only bold when using `TeX Live` version >= 2020 and `pdfLaTeX` compiler
+  - Example:
+```
+\documentclass{article}
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{lmodern}
+
+\begin{document}
+\fontfamily{cmr}\textbf{\textsc{Sample}}
+\end{document}
+```
+  - Solutions:
+    - Use older version of TeX Live. For Overleaf, change it in project settings, 2019 works fine.
+    - Or use normal small caps, remove `\textbf` before `\textsc{\@author}` in `tlsflyleaf.sty` (2 locations).
+    - Or replace `\usepackage{lmodern}` by `\usepackage{fix-cm}` in `FormatAndDefs.tex`. (Provided by Overleaf support team)
+    - Or use `XeLaTeX` or `LuaLaTeX` as compiler and replace usepackages (inputenc, fontenc, lmodern) to `\usepackage{fontspec}`, `\setmainfont{CMU Serif}`. (Provided by Overleaf support team)
 
 ## Other version