Update SUMMARY.md

Author: gitbook-bot

SUMMARY.md

@@ -14,6 +14,7 @@
    * [Experimental Design](user/experimental-design.md)
        * [Experimental Design MAC](user/experimental-design-mac.md)
            * [Sorghum Lines MAC Year 1](../user/sorghum_MAC_1.md)
+           * s
        * [Experimental Design Danforth](user/experimental-design-danforth.md)
        * [Sorghum BAP Lines](user/bap_lines.md)
 * [User Manual](user/user-manual.md)