Name --replace in the error for --dry-run with in-place formatting

"cannot use --dry-run and --in-place at the same time" named a flag
that does not exist: in-place formatting is -i, -r, -replace or
--replace (#40, from google/google-java-format#1094). The message now
says --replace, the long form the usage text shows.

This ports google/google-java-format#1451 by rootkiller6788, including
its test for the --replace --dry-run spelling next to -i -n.

Author: rootkiller6788

open-java-format/src/main/java/com/palantir/javaformat/java/Main.java

@@ -280,7 +280,7 @@ public static CommandLineOptions processArgs(String... args) throws UsageExcepti
             throw new UsageException("--assume-filename is only supported when formatting standard input");
         }
         if (parameters.dryRun() && parameters.inPlace()) {
-            throw new UsageException("cannot use --dry-run and --in-place at the same time");
+            throw new UsageException("cannot use --dry-run and --replace at the same time");
         }
         return parameters;
     }

open-java-format/src/test/java/com/palantir/javaformat/java/CommandLineFlagsTest.java

@@ -102,11 +102,18 @@ public void inPlaceStdin() {
 
     @Test
     public void inPlaceDryRun() {
+        try {
+            Main.processArgs("--replace", "--dry-run", "A.java");
+            fail("fail");
+        } catch (UsageException e) {
+            assertThat(e).hasMessageThat().contains("cannot use --dry-run and --replace at the same time");
+        }
+
         try {
             Main.processArgs("-i", "-n", "A.java");
             fail("fail");
         } catch (UsageException e) {
-            assertThat(e).hasMessageThat().contains("cannot use --dry-run and --in-place at the same time");
+            assertThat(e).hasMessageThat().contains("cannot use --dry-run and --replace at the same time");
         }
     }