feat(Viz1&Viz2): improved the visualizations' descriptions

Author: Roméo Maignal

src/components/Viz1.tsx

@@ -256,7 +256,7 @@ if (!data.length || !svgRef.current || !chartRef.current) return
           <p className="section-badge">/ Visualization 01</p>
           <h1 className="viz-title">Safety record of aircraft manufacturers</h1>
           <p>
-            Select any combination of manufacturers and see how their incident and fatality records compare year by year, from the dawn of commercial aviation to today.
+             In recent years, Boeing's 737 MAX defects have led the media to often portray the aircraft manufacturer as less reliable than its European counterpart, Airbus. While it's true that recent serious incidents have regularly implicated the American company, what is the real situation? What does the data say about other aircraft manufacturers? Select any combination of manufacturers and see how their incident and fatality records compare year by year, from the dawn of commercial aviation to today.
           </p>
         </div>
         <div className="widget" ref={widgetRef}>

src/components/Viz2.tsx

@@ -341,10 +341,7 @@ const Viz2: React.FC = () => {
           <p className="section-badge">/ Visualization 02</p>
           <h1 className="viz-title">Safety record of airlines</h1>
           <p>
-            Each bubble represents one of the top airlines by incident count.
-            Its size reflects the number of incidents or fatalities in the selected
-            year. Drag the slider or press play to watch how the record evolves
-            from 1920 to 2024.
+            What about airlines? What is the correlation between the name of a flight operator and its risk of incident/accident? Each bubble represents one of the top airlines by incident count. Its size reflects the number of incidents or fatalities in the selected year. Drag the slider or press play to watch how the record evolves from 1920 to 2024.
           </p>
         </div>
       </div>