Update README.md

Author: luojia65

README.md

@@ -11,8 +11,8 @@ Titles without a hyperlink indicates that slide of this speech is not public yet
 This speech is delivered on online meeting of Tsinghua University undergraduate projects.
 It describes how RustSBI implementation would coexist with secure enclave RISC-V SBI extensions,
 a possible way to detect exception within function while executing instruction, and a Rust way to
-read supervisor memory from machine mode. It also introduces SBI implementation projects like Oreboot
-and RustSBI-Unmatched.
+read supervisor memory from machine mode. It also introduces SBI implementations like Oreboot
+and RustSBI-Unmatched, which can be used to develop secure enclave firmware projects.
 
 ### [RISC-V Bootloader Environment: Application and Standardization](2022/RISC-V引导程序环境：应用与规范.pdf), Apr 2022