docs: remove stray whitespace

There's some stray whitespace in these files that doesn't do anything
useful. Let's get rid of if.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>

docs/submittingpatches.html

@@ -68,7 +68,7 @@ with a module name.  Examples:
 if needed.  For example:
 <pre>
     i965: Remove end-of-thread SEND alignment code.
-    
+
     This was present in Eric's initial implementation of the compaction code
     for Sandybridge (commit 077d01b6). There is no documentation saying this
     is necessary, and removing it causes no regressions in piglit on any
@@ -89,11 +89,11 @@ noted in the patch comment.  For example:
 process, they should be noted such as in this example:
 <pre>
     st/mesa: add ARB_texture_stencil8 support (v4)
-    
+
     if we support stencil texturing, enable texture_stencil8
     there is no requirement to support native S8 for this,
     the texture can be converted to x24s8 fine.
-    
+
     v2: fold fixes from Marek in:
        a) put S8 last in the list
        b) fix renderable to always test for d/s renderable