docs: https all the links \o/

Most of them already redirected to https anyway, so we might as well
avoid the redirection and the security implications by linking directly
to the right protocol.

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Brian Paul <brianp@vmware.com>
diff --git a/docs/viewperf.html b/docs/viewperf.html
index a60a44f..0eb51a5 100644
--- a/docs/viewperf.html
+++ b/docs/viewperf.html
@@ -18,7 +18,7 @@
 
 <p>
 This page lists known issues with
-<a href="http://www.spec.org/gwpg/gpc.static/vp11info.html" target="_main">SPEC Viewperf 11</a>
+<a href="https://www.spec.org/gwpg/gpc.static/vp11info.html" target="_main">SPEC Viewperf 11</a>
 and <a href="https://www.spec.org/gwpg/gpc.static/vp12info.html" target="_main">SPEC Viewperf 12</a>
 when running on Mesa-based drivers.
 </p>
@@ -66,10 +66,10 @@
 
 <p>
 These tests use features of the
-<a href="http://www.opengl.org/registry/specs/NV/fragment_program2.txt"
+<a href="https://www.opengl.org/registry/specs/NV/fragment_program2.txt"
 target="_main">
 GL_NV_fragment_program2</a> and
-<a href="http://www.opengl.org/registry/specs/NV/vertex_program3.txt"
+<a href="https://www.opengl.org/registry/specs/NV/vertex_program3.txt"
 target="_main">
 GL_NV_vertex_program3</a> extensions without checking if the driver supports
 them.
@@ -86,7 +86,7 @@
 
 <p>
 These tests depend on the
-<a href="http://www.opengl.org/registry/specs/NV/primitive_restart.txt"
+<a href="https://www.opengl.org/registry/specs/NV/primitive_restart.txt"
 target="_main">GL_NV_primitive_restart</a> extension.
 </p>