Fix multiple documentation issues concerned by clippy

framework/libs/ktest/src/lib.rs

@@ -12,7 +12,8 @@
 //! By all means, ktest is an individule crate that only requires:
 //!  - a custom linker script section `.ktest_array`,
 //!  - and an alloc implementation.
-//! to work. And the frame happens to provide both of them. Thus, any crates depending
+//!
+//! And the frame happens to provide both of them. Thus, any crates depending
 //! on the frame can use ktest without any extra dependency.
 //!
 //! ## Usage

framework/libs/linux-bzimage/setup/src/x86/amd64_efi/paging.rs

@@ -8,6 +8,7 @@
 //!  - Level-3: Page Directory Pointer Table (PDPT);
 //!  - Level-2: Page Directory (PD);
 //!  - Level-1: Page Table (PT).
+//!
 //! We sometimes use "level-n" page table to refer to the page table described
 //! above, avoiding the use of complicated names in the Intel manual.