adjust wording

Author: vladak

docs/index.html

@@ -34,14 +34,13 @@ <h1>Unix/Linux Programming in C (NSWI015)</h1>
 
 <p>
 Note: Each labs are different so we recommend you to attend every week if
-possible (even that it's officially biweekly).
+possible (even though it's officially biweekly).
 </p>
 
-<p>Lecturers: Vladim&iacute;r Kotal</p>
+<p>Lecturer: Vladim&iacute;r Kotal</p>
 
 <p>
-<b>The class is lectured in English unless all students can speak/understand
-Czech.</b>
+<b>The class is lectured in English.</b>
 
 <p>
 <table bgcolor="lightgreen">