Grammatical/Typo changes
Patch: Pooja Chandak

This closes #2271
diff --git a/doc/specs/HeaderFormat.md b/doc/specs/HeaderFormat.md
index 0456f1e..9b74159 100644
--- a/doc/specs/HeaderFormat.md
+++ b/doc/specs/HeaderFormat.md
@@ -46,7 +46,7 @@
 don't know how to transform the data.
 
 Conversely, data in the info headers is ignorable.  This should only
-be things like timestamps, debuging tracing, etc.  Using the header
+be things like timestamps, debugging tracing, etc.  Using the header
 size you should be able to skip this data and read the payload safely
 if you don't know the info ID.
 
@@ -61,7 +61,7 @@
 Header will be padded out to next 4-byte boundary with `0x00`.
 
 Max frame size is `0x3FFFFFFF`, which is slightly less than `HTTP_MAGIC`.
-This allows us to distingush between different (older) transports.
+This allows us to distinguish between different (older) transports.
 
 ### Transform IDs: