javadoc fixes

Author: amihaiemil

src/main/java/com/amihaiemil/docker/RtExec.java

@@ -44,7 +44,7 @@ final class RtExec implements Exec {
     private final HttpClient client;
 
     /**
-     * Base URI for Images API.
+     * URI of this Exec.
      */
     private final URI baseUri;
 

src/main/java/com/amihaiemil/docker/RtExecs.java

@@ -42,7 +42,7 @@ final class RtExecs implements Execs {
     private final HttpClient client;
 
     /**
-     * Base URI for Images API.
+     * Base URI for the Exec API.
      */
     private final URI baseUri;