Update UI text in Unleash welcome key concepts page

frontend/src/component/personalDashboard/WelcomeDialog.tsx

@@ -60,50 +60,47 @@ export const WelcomeDialog: FC<IWelcomeDialogProps> = ({ open, onClose }) => {
                     />
                 </WelcomeLine>
                 <Box>
-                    Here are the concepts you{' '}
+                    Here are the{' '}
                     <Typography
                         component='span'
                         color='primary'
                         fontWeight='bold'
                     >
-                        must understand
+                        key concepts
                     </Typography>{' '}
-                    in order to work effectively with Unleash
+                    you'll need when working with Unleash
                 </Box>
                 <StyledImg src={formatAssetPath(onboardingConcepts)} />
                 <ScreenReaderOnly>
                     <h2>Environments</h2>
                     <p>
-                        Unleash comes with two global environments. Once you
-                        create a feature flag it will exist in all environments,
-                        but it will hold different configuration per
-                        environment.
+                        Unleash comes with two default environments. Feature
+                        flags exist across all environments but can have
+                        different configurations in each.
                     </p>
                     <h2>Projects</h2>
                     <p>
-                        Feature flags live in projects. When SDKs connect to
-                        Unleash they use an environment /project combination in
-                        order to retrieve the correct configuration. You can
-                        also use projects to control access level for feature
-                        flags.
+                        Feature flags live inside projects. When SDKs connect to
+                        Unleash they use the combination of environment and
+                        project to retrieve the correct configuration. Projects
+                        also control who can access a feature flag.
                     </p>
                     <h2>Feature flags</h2>
                     <p>
-                        Flags live in projects and across all configured
-                        environments. Each flag will have separate configuration
-                        in each environment enabled for the project that they
-                        live in.
+                        Flags live inside a project and exist across all its
+                        environments. Flags can have a unique configuration in
+                        each environment enabled for their project.
                     </p>
                     <h2>Activation strategy</h2>
                     <p>
-                        Activation strategies are rulesets that decide whether
-                        or not a feature flag should be enabled in a specific
-                        environment. You can configure as many rulesets as you
-                        want per environment.
+                        Activation strategies are rulesets that determine if a
+                        feature flag should be enabled in a specific
+                        environment. You can configure multiple activation
+                        strategies per environment.
                     </p>
                 </ScreenReaderOnly>
                 <Button variant='contained' onClick={onClose}>
-                    Got it, let's get started
+                    Got it, let's get started!
                 </Button>
             </ContentWrapper>
         </StyledDialog>