Change tabs for spaces.

skel/src/docs/build.docs

@@ -15,23 +15,23 @@ then
     then
         do_cmd cp src/docs/Doxyfile.in ${DOXYFILE} || return 1
         echo "INPUT = ${MONOLITHIC_DOC}" >> ${DOXYFILE}
-	echo "PROJECT_NUMBER = ${VERSION}" >> ${DOXYFILE}
+        echo "PROJECT_NUMBER = ${VERSION}" >> ${DOXYFILE}
     fi
 
     MODIFIED=0
     for file in ${MONOLITHIC_DOC}
     do
         if [ ${file} -nt html/index.html ]
-	then
-	    MODIFIED=1
-	    break
-	fi
+        then
+            MODIFIED=1
+            break
+        fi
     done
 
     if [ ${MODIFIED} -ne 0 ]
     then
         do_cmd doxygen ${DOXYFILE} || return 1
-	print_success "Documentation built"
+        print_success "Documentation built"
     else
         print_success "Documentation is up to date"
     fi