docs/design/: Fix two typos.

Original commit message from CVS:
* docs/design/draft-framestep.txt:
* docs/design/part-negotiation.txt:
Fix two typos.

ChangeLog

@@ -1,3 +1,9 @@
+2008-06-29  Stefan Kost  <ensonic@users.sf.net>
+
+	* docs/design/draft-framestep.txt:
+	* docs/design/part-negotiation.txt:
+	  Fix two typos.
+
 2008-06-27  Stefan Kost  <ensonic@users.sf.net>
 
 	* configure.ac:

docs/design/draft-framestep.txt

@@ -18,7 +18,7 @@ The following requirements are needed:
  - Arbitrary increments in any supported format (time, frames, bytes ...)
  - High speed, minimal overhead. This mechanism is not more expensive than
    simple playback.
- - swithing between forwards and backwards stepping should be fast.
+ - switching between forwards and backwards stepping should be fast.
  - Maintain synchronisation between streams.
  - Get feedback of the amount of skipped data.
  - Ability to play a certain amount of data at an arbitrary speed.

docs/design/part-negotiation.txt

@@ -113,7 +113,7 @@ The general flow for a sink pad starting a renegotiation.
              src              sink
               |                 |
               |  accepts?       |
-	      |<----------------| type B
+              |<----------------| type B
               |      yes        |
               |---------------->|
               |                 |