docs: small fixes

Co-authored-by: Wansmer <wansmer@gmail.com>
Co-authored-by: Andrew Voynov <andrewvoynov.b@gmail.com>
Co-authored-by: David Moberg <david.moberg@mediatek.com>

src/nvim/README.md

@@ -209,7 +209,8 @@ not related to TUI rendering like so:
 
     lldb -- ./build/bin/nvim --headless --listen ~/.cache/nvim/debug-server.pipe
 
-You can then attach to the headless process to interact with the editor like so:
+While in lldb, enter `run`. You can then attach to the headless process in a
+new terminal window to interact with the editor like so:
 
     ./build/bin/nvim --remote-ui --server ~/.cache/nvim/debug-server.pipe
 

src/nvim/grid_defs.h

@@ -12,7 +12,7 @@
 // Includes final NUL. at least 4*(MAX_MCO+1)+1
 #define MAX_SCHAR_SIZE 32
 
-// if data[0] is 0xFF, then data[1..4] is a 24-bit index (in machine endianess)
+// if data[0] is 0xFF, then data[1..4] is a 24-bit index (in machine endianness)
 // otherwise it must be a UTF-8 string of length maximum 4 (no NUL when n=4)
 
 typedef uint32_t schar_T;

src/nvim/marktree.c

@@ -852,7 +852,7 @@ static void intersect_add(Intersection *x, Intersection *y)
   }
 }
 
-// inplace assymetric difference: x &= ~y
+// inplace asymmetric difference: x &= ~y
 static void intersect_sub(Intersection *restrict x, Intersection *restrict y)
 {
   size_t xi = 0, yi = 0;