8068485: Update references of download.oracle.com to docs.oracle.com in javadoc makefile

Reviewed-by: erikj

make/Javadoc.gmk

@@ -114,10 +114,10 @@ BUG_SUBMIT_LINE = <a href="$(BUG_SUBMIT_URL)">Submit a bug or feature</a>
 
 # Url to devdocs page
 # Was: http://java.sun.com/javase/6/webnotes/devdocs-vs-specs.html
-DEV_DOCS_URL-7 = http://download.oracle.com/javase/7/docs/index.html
-DEV_DOCS_URL-8 = http://download.oracle.com/javase/8/docs/index.html
+DEV_DOCS_URL-7 = https://docs.oracle.com/javase/7/docs/index.html
+DEV_DOCS_URL-8 = https://docs.oracle.com/javase/8/docs/index.html
 DEV_DOCS_URL = $(DEV_DOCS_URL-$(JDK_MINOR_VERSION))
-DOCS_BASE_URL = http://download.oracle.com/javase/7/docs
+DOCS_BASE_URL = https://docs.oracle.com/javase/7/docs
 
 # Common Java trademark line
 JAVA_TRADEMARK_LINE = Java is a trademark or registered trademark of \