Update external/lab-hsa/pictograms/pictograms.md

external/lab-hsa/pictograms/pictograms.md

@@ -4,7 +4,7 @@ Before starting to work in the laboratories of the LCSB, it is **mandatory** to
 
 Here is a summary of the pictograms that can be encountered in the laboratories.
 
-You can find some labels with the pictograms in the common stock of BT1 (-01 floo) and of BT2 (-02 floor).
+You can find some labels with the pictograms in the common stock of BT1 (-01 floor) and of BT2 (-02 floor).
 
 ## Health Hazard