docs: fix misspellings

Fixed what I noticed; no warranty for exhaustiveness.

Signed-off-by: Nathan Kidd <nkidd@opentext.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
diff --git a/docs/conform.html b/docs/conform.html
index c5f8ece..5593137 100644
--- a/docs/conform.html
+++ b/docs/conform.html
@@ -19,7 +19,7 @@
 <p>
 The SGI OpenGL conformance tests verify correct operation of OpenGL
 implementations.  I, Brian Paul, have been given a copy of the tests
-for testing Mesa.  The tests are not publically available.
+for testing Mesa.  The tests are not publicly available.
 </p>
 <p>
 This file has the latest results of testing Mesa with the OpenGL 1.2