Change short option name for --calculate-optimal-total-split from -o to -c

Author: Donnerbart

README.md

@@ -39,7 +39,7 @@ java -jar split-tests-java.jar --split-index 0 --split-total 10 --glob 'project/
 ```plain
 Usage: <main class> [options]
   Options:
-    --calculate-optimal-total-split, -o
+    --calculate-optimal-total-split, -c
       Calculates the optimal test split (only on the first split index). Logs 
       a warning if --split-total does not match.
       Default: false

src/main/java/de/donnerbart/split/Arguments.java

@@ -54,7 +54,7 @@ class Arguments {
     @SuppressWarnings("NotNullFieldNotInitialized")
     @NotNull Path workingDirectory;
 
-    @Parameter(names = {"--calculate-optimal-total-split", "-o"},
+    @Parameter(names = {"--calculate-optimal-total-split", "-c"},
                description = "Calculates the optimal test split (only on the first split index). Logs a warning if --split-total does not match.")
     boolean calculateOptimalTotalSplit = false;