fix typo

external/lab-hsa/spill/spill.md

@@ -45,7 +45,7 @@ You can find the signalisation material needed to lock the aera and the spill ki
 
 <img src="img/img2.png" width="700">
 
-When you are done witht the emergency measures, you can start the **spill management**. 
+When you are done with the emergency measures, you can start the **spill management**. 
 
 ## Second phase: the spill management
 
@@ -82,7 +82,7 @@ You will find here below illustrations of interventions for chemical and biologi
 
 <img src="img/img7.png" width="700">
 
-5. Disinfect. The aerea of disinfction should be twice as big as the size of the spill.
+5. Disinfect. The aerea of disinfection should be twice as big as the size of the spill.
     - For small spill (~10mL), use the disinfectant from the lab
     - For larger spill, use the disinfectant from the spill kit