scripts/basic/docproc.c: remove stray NUL byte from the source

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
index e178d72..dc7a0fc 100644
--- a/scripts/basic/docproc.c
+++ b/scripts/basic/docproc.c
@@ -249,7 +249,7 @@
 void extfunc(char * filename) { docfunctions(filename, FUNCTION);   }
 
 /*
- * Document spåecific function(s) in a file.
+ * Document specific function(s) in a file.
  * Call kernel-doc with the following parameters:
  * kernel-doc -docbook -function function1 [-function function2]
  */