refacto: variable renaming

src/App.module.scss

src/App.test.js

src/index.scss

src/js/components/Button/Button.module.scss

src/js/components/MultiColoredText/MultiColoredText.js

.../components/MultiColoredText/MultiColoredText.module.scss

src/js/components/TopBar/TopBar.js

src/js/components/TopBar/TopBar.module.scss

src/js/components/TopLinks/TopLInks.js

src/js/components/TopLinks/TopLinks.module.scss

src/js/pages/MainPage,module.scss

src/js/pages/MainPage.js

src/js/sections/BottomSection/BottomSection.module.scss

src/js/sections/CloudSection/CloudSection.module.scss

src/js/sections/FeatureSection/FeatureSection.module.scss

src/js/sections/LandingSection/LandingSection.module.scss

src/js/sections/OctopusSection/OctopusSection.module.scss

src/js/sections/StatsSection/StatsSection.module.scss

src/js/sections/TowerSection/TowerSection.module.scss

src/js/sections/VscodeSection/VscodeSection.module.scss