Add note on short caption

slides/chapter-10.de.md

@@ -81,7 +81,7 @@ Um Redundanz zu vermeiden, ist es manchmal praktisch, den Quelltext direkt aus d
 ```
 
 ``` {.lang-java .hljs data-sourcefile="Test.java"}
-public class HelloWorld {
+public class Test {
     public static void main(/*…*/) {
         System.out.println(/*…*/);
     }

slides/chapter-10.en.md

@@ -81,7 +81,7 @@ We can avoid redundancy by including source code directly from its source file.
 ```
 
 ``` {.lang-java .hljs data-sourcefile="Test.java"}
-public class HelloWorld {
+public class Test {
     public static void main(/*…*/) {
         System.out.println(/*…*/);
     }

slides/chapter-11.de.md

@@ -15,8 +15,8 @@ Um Grafiken darzustellen, muss das Paket `graphicx` eingebunden werden.
 ``` {.lang-tex .hljs}
 \begin{figure}
     \includegraphics{<dateipfad>}
-    \caption[<kurztitel>]
-            {<bildunterschrift>}
+    \caption[<kurztitel (abbildungsver-
+		zeichnis)>]{<bildunterschrift>}
 \end{figure}
 ```
 

slides/chapter-11.en.md

@@ -15,8 +15,8 @@ To display graphics, we need the `graphicx` package.
 ``` {.lang-tex .hljs}
 \begin{figure}
     \includegraphics{<file path>}
-    \caption[<short caption>]
-            {<full caption>}
+    \caption[<short caption (table of
+		figures)>]{<full caption>}
 \end{figure}
 ```