package name: utf8x → utf8

This supports more unicode characters to fix errors like "Package ucs Error: Unknown Unicode character 8208 = U+2010"

Ref https://tex.stackexchange.com/a/45511/152873

report/report.tex

@@ -1,7 +1,7 @@
 \documentclass[a4paper,headings=small,11pt,oneside,bibliography=totoc]{scrreprt}
 \addtokomafont{disposition}{\sffamily}
 \renewcommand\familydefault{\sfdefault}
-\usepackage[utf8x]{inputenc}
+\usepackage[utf8]{inputenc}
 \usepackage[english]{babel}
 \usepackage{amssymb}
 \usepackage{amsthm}

short-report/short-report.tex

@@ -1,7 +1,7 @@
 \documentclass[a4paper,headings=small,11pt,oneside,bibliography=totoc]{scrreprt}
 % \addtokomafont{disposition}{\sffamily}
 \renewcommand\familydefault{\sfdefault}
-\usepackage[utf8x]{inputenc}
+\usepackage[utf8]{inputenc}
 \usepackage[english]{babel}
 \usepackage{amssymb}
 \usepackage{amsthm}