fix: change typo

src/containers/SelectSessionModal/__snapshots__/index.test.jsx.snap

@@ -35,7 +35,7 @@ exports[`SelectSessionModal snapshot empty modal with leave option  1`] = `
       onClick={[MockFunction useSelectSessionModalData.closeSessionModal]}
       variant="tertiary"
     >
-      Nevermind
+      Never mind
     </Button>
     <Button>
       Confirm Session
@@ -103,7 +103,7 @@ exports[`SelectSessionModal snapshot modal with leave option  1`] = `
       onClick={[MockFunction useSelectSessionModalData.closeSessionModal]}
       variant="tertiary"
     >
-      Nevermind
+      Never mind
     </Button>
     <Button>
       Confirm Session
@@ -166,7 +166,7 @@ exports[`SelectSessionModal snapshot modal without leave option  1`] = `
       onClick={[MockFunction useSelectSessionModalData.closeSessionModal]}
       variant="tertiary"
     >
-      Nevermind
+      Never mind
     </Button>
     <Button>
       Confirm Session

src/containers/SelectSessionModal/messages.js

@@ -30,7 +30,7 @@ export const messages = StrictDict({
   nevermind: {
     id: 'learner-dash.selectSession.nevermind',
     description: 'Cancel action for select session modal',
-    defaultMessage: 'Nevermind',
+    defaultMessage: 'Never mind',
   },
   confirmSession: {
     id: 'learner-dash.selectSession.confirmSession',