minor spelling fixes..

NOTES.md

@@ -5,7 +5,7 @@ This file contains various notes about the development of this
 repository.
 
 
-This is based upon the PingPong code from heltec for Node 151[1].
+This is based upon the PingPong code from Heltec for Node 151[1].
 
 The STM32Cube packages are undocumented as far as I can tell.  Various
 files were copied from the PingPong code.
@@ -43,7 +43,7 @@ LANG=C sed -i '' -e 's/[       ]*^M$//' $(find stm32/ -type f)
 Running gdb
 -----------
 
-First, just run openocd, but w/o any needed command, or you can reset it:
+First, just run `openocd`, but w/o any needed command, or you can reset it:
 ```
 sudo openocd -f interface/ftdi/digilent-hs1.cfg -f interface/ftdi/swd-resistor-hack.cfg -f target/stm32l1.cfg -c "init" -c "reset init"
 ```

README.md

@@ -16,7 +16,7 @@ implementation to be more simple, and security to be built in.  It
 could also be used for other projects that need security.
 
 One of the other requirements is that the code be 100% open sourced,
-not GPL licensed, and no propietary components.  This ment that using
+not GPL licensed, and no proprietary components.  This meant that using
 IDE's like ST's STM32CubeIDE which is only available in binary form
 was not a choice, as that would preclude building on an operating
 system other than Windows/MaxOS/Linux.
@@ -41,7 +41,7 @@ mkdir $MAKEOBJDIR
 bsdmake all
 ```
 
-And in the directory `build`, a file `lora.irr.elf` should be pressent.
+And in the directory `build`, a file `lora.irr.elf` should be present.
 
 Flashing
 --------