modify description to begin with capital

Author: Suresh Jagtap

pages/linux/lvrename.md

@@ -1,6 +1,6 @@
 # lvrename
 
-> lvrename renames an existing LV or a historical LV.
+> The lvrename renames an existing LV or a historical LV.
 > More information: <https://manned.org/man/lvrename>.
 
 - Rename a logical volume:
@@ -11,6 +11,6 @@
 
 `lvrename /dev/vg02/lvold vg02/lvnew`
 
-- An alternate syntax to rename "lvold" to "lvnew"::
+- An alternate syntax to rename "lvold" to "lvnew":
 
 `lvrename vg02 lvold lvnew`