'README.adoc': refine wording, fix usage

README.adoc

@@ -1,7 +1,7 @@
 # rename-efi-entry
 
 [.lead]
-A Bash script to rename EFI boot entries 
+A Bash script to rename EFI boot entries
 
 ## Background
 
@@ -10,15 +10,16 @@ A Bash script to rename EFI boot entries
 EFI{nbsp}/ https://uefi.org/[UEFI] is a specification that defines a software interface between an operating system and
 platform firmware. It is intended by hardware manufacturers to replace the legacy BIOS firmware interface.
 
-In particular this specification allows to define OS boot configurations to be executed upon system power on. These boot
-configurations specify disk partitions to boot from and are typically identified by their text labels that are listed in
-"Startup"{nbsp}/ "Boot" EFI setup section. These boot configurations may be optionally selectable upon system startup.
+In particular this specification allows to define OS boot configurations to be loaded{nbsp}/ executed upon system power
+on. These boot configurations specify disk partitions to boot from and are typically identified by their text labels
+that are listed in the "Startup"{nbsp}/ "Boot" EFI setup section. These boot configurations may be optionally selectable
+upon system startup.
 
 ### The problem
 
-Operating system installation routines tend to have these boot configuration entry labels hard-coded and to create
-them in EFI PROM automatically. So in case a computer has, say, several Ubuntu instances installed, it is also likely to
-have several identical "ubuntu" boot configuration labels in its EFI menus, causing a kind of confusion.
+Operating system installation routines tend to have these boot configuration labels hard-coded and to create them in EFI
+PROM automatically. So in case a computer has, say, several Ubuntu instances installed, it is also likely to have
+several identical "ubuntu" boot configuration labels in its EFI menus, causing a kind of confusion.
 
 One might further want to rename boot configurations, so to make them distinguishable, but unfortunately the standard
 https://github.com/rhboot/efibootmgr[`efibootmgr`] utility has no option for that. It is only possible to delete a boot
@@ -33,7 +34,7 @@ arguments for `efibootmgr`.
 
 ### Usage
 
- sudo ./rename-efi-entry existing_efi_label new_efi_label [bootnum]
+ sudo ./rename-efi-entry.bash existing_efi_label new_efi_label [bootnum]
 
 [%autowidth,cols=2*.<]
 .Command line arguments