fix(install): fix backslash in `printf` when showing logo (#10422)

Fixes #10422

tools/install.sh

@@ -339,11 +339,11 @@ EOF
 
 # shellcheck disable=SC2183  # printf string has more %s than arguments ($RAINBOW expands to multiple arguments)
 print_success() {
-  printf '%s         %s__      %s           %s        %s       %s     %s__   %s\n' $RAINBOW $RESET
-  printf '%s  ____  %s/ /_    %s ____ ___  %s__  __  %s ____  %s_____%s/ /_  %s\n' $RAINBOW $RESET
-  printf '%s / __ \%s/ __ \  %s / __ `__ \%s/ / / / %s /_  / %s/ ___/%s __ \ %s\n' $RAINBOW $RESET
-  printf '%s/ /_/ /%s / / / %s / / / / / /%s /_/ / %s   / /_%s(__  )%s / / / %s\n' $RAINBOW $RESET
-  printf '%s\____/%s_/ /_/ %s /_/ /_/ /_/%s\__, / %s   /___/%s____/%s_/ /_/  %s\n' $RAINBOW $RESET
+  printf '%s         %s__      %s           %s        %s       %s     %s__   %s\n'      $RAINBOW $RESET
+  printf '%s  ____  %s/ /_    %s ____ ___  %s__  __  %s ____  %s_____%s/ /_  %s\n'      $RAINBOW $RESET
+  printf '%s / __ \\%s/ __ \\  %s / __ `__ \\%s/ / / / %s /_  / %s/ ___/%s __ \\ %s\n'  $RAINBOW $RESET
+  printf '%s/ /_/ /%s / / / %s / / / / / /%s /_/ / %s   / /_%s(__  )%s / / / %s\n'      $RAINBOW $RESET
+  printf '%s\\____/%s_/ /_/ %s /_/ /_/ /_/%s\\__, / %s   /___/%s____/%s_/ /_/  %s\n'    $RAINBOW $RESET
   printf '%s    %s        %s           %s /____/ %s       %s     %s          %s....is now installed!%s\n' $RAINBOW $GREEN $RESET
   printf '\n'
   printf '\n'

tools/upgrade.sh

@@ -182,12 +182,12 @@ if git pull --rebase --stat $remote $branch; then
     printf "${BLUE}%s \`${BOLD}%s${RESET}${BLUE}\`${RESET}\n" "You can see the changelog with" "omz changelog"
   fi
 
-  printf '%s         %s__      %s           %s        %s       %s     %s__   %s\n' $RAINBOW $RESET
-  printf '%s  ____  %s/ /_    %s ____ ___  %s__  __  %s ____  %s_____%s/ /_  %s\n' $RAINBOW $RESET
-  printf '%s / __ \%s/ __ \  %s / __ `__ \%s/ / / / %s /_  / %s/ ___/%s __ \ %s\n' $RAINBOW $RESET
-  printf '%s/ /_/ /%s / / / %s / / / / / /%s /_/ / %s   / /_%s(__  )%s / / / %s\n' $RAINBOW $RESET
-  printf '%s\____/%s_/ /_/ %s /_/ /_/ /_/%s\__, / %s   /___/%s____/%s_/ /_/  %s\n' $RAINBOW $RESET
-  printf '%s    %s        %s           %s /____/ %s       %s     %s          %s\n' $RAINBOW $RESET
+  printf '%s         %s__      %s           %s        %s       %s     %s__   %s\n'      $RAINBOW $RESET
+  printf '%s  ____  %s/ /_    %s ____ ___  %s__  __  %s ____  %s_____%s/ /_  %s\n'      $RAINBOW $RESET
+  printf '%s / __ \\%s/ __ \\  %s / __ `__ \\%s/ / / / %s /_  / %s/ ___/%s __ \\ %s\n'  $RAINBOW $RESET
+  printf '%s/ /_/ /%s / / / %s / / / / / /%s /_/ / %s   / /_%s(__  )%s / / / %s\n'      $RAINBOW $RESET
+  printf '%s\\____/%s_/ /_/ %s /_/ /_/ /_/%s\\__, / %s   /___/%s____/%s_/ /_/  %s\n'    $RAINBOW $RESET
+  printf '%s    %s        %s           %s /____/ %s       %s     %s          %s\n'      $RAINBOW $RESET
   printf '\n'
   printf "${BLUE}%s${RESET}\n\n" "$message"
   printf "${BLUE}${BOLD}%s %s${RESET}\n" "To keep up with the latest news and updates, follow us on Twitter:" "$(fmt_link @ohmyzsh https://twitter.com/ohmyzsh)"