revert the Navbar.Brand to only 50% width

for some reason, with the `w-75` class, the "Sign In" text in the Header
was being shown on two lines. Not sure why, when this wasn't happening
yesterday. retested with tall and wide logos to make sure they still
are contained in the given area and don't distort.

Author: alishaevn

src/compounds/Header/Header.jsx

@@ -11,7 +11,7 @@ const Header = ({ auth, linkColor, logo, navLinks, userSession }) => {
   return (
     <Navbar bg='primary' expand='md'>
       <Container>
-        <Navbar.Brand className='w-75 custom-navbar-brand'>
+        <Navbar.Brand className='w-50 custom-navbar-brand'>
           <Logo src={src} alt={alt} height='auto' addClass='mw-100 mh-100' />
         </Navbar.Brand>
         <Navbar.Toggle aria-controls='basic-navbar-nav'>