fix Issue 11512 - Can't build Phobos docs with win32 makefile

Change default value of DOCSRC to ../dlang.org
Fix spelling mistake in doc comment
Merge pull request #1761 from 9rnsr/fix11512

Issue 11512 - Can't build Phobos docs with win32 makefile
Merge pull request #1762 from donc/infinitite

Fix spelling mistake in doc comment