Resolve "Vérificateur: ajouter un avertissement à l'utilisation"

Closes #643 (closed)

docs/en/calculators/verif/principe.md

@@ -2,9 +2,18 @@
 
 ## Warning
 
-The purpose of this tool is to carry out a simple check of the compatibility between certain fish pass sizing criteria and the passage capacities of the target fish species. It may prove useful during the design phase of a facility to ensure that the proposed design is consistent with its hydrological operating range.
-
-However, this tool is not sufficient to fully verify the functionality of a planned or existing system, insofar as other important dimensional and hydraulic criteria are not taken into account by this module (feed flow rate and characteristics of the fish intake in terms of attractiveness, and depending on the type of system: basin aspect ratio, concentration of macro-roughness, bottom roughness, size of humps, etc.).
+The purpose of this tool is to carry out a simple check of the compatibility
+between certain fish pass sizing criteria and the passage capacities of the
+target fish species. 
+It may prove useful during the design phase of a facility to ensure that the
+proposed design is consistent with its hydrological operating range.
+
+However, this tool is not sufficient to fully verify the functionality of a
+planned or existing system, insofar as other important dimensional and
+hydraulic criteria are not taken into account by this module 
+(feed flow rate and characteristics of the fish intake in terms of attractiveness,
+and depending on the type of system: basin aspect ratio,
+concentration of macro-roughness, bottom roughness, size of baffles, etc.).
 
 This module allows to verify the capacity of different fish species to cross the following types of fish passes: