Add docstring about increment

Author: Jlalond

lldb/bindings/interface/SBProgressDocstrings.i

@@ -19,3 +19,7 @@ without waiting for your language or language implementations non-deterministic
 of the SBProgress object.
 
 Note once finalized, no further increments will be processed.") lldb::SBProgress::Finalize;
+
+%feature("docstring",
+"Increment the progress by a given number of units, optionally with a message. Not all progress events are guaraunteed
+to be sent, but incrementing to the total will always guarauntee a progress end event being sent.") lldb::SBProcess::Increment; 

lldb/include/lldb/API/SBProgress.h

@@ -61,7 +61,7 @@ class LLDB_API SBProgress {
 
   /// Explicitly finalize an SBProgress, this can be used to terminate a
   /// progress on command instead of waiting for a garbage collection or other
-  /// finalizer.
+  /// RAII to destroy the contained progress object.
   void Finalize();
 
 protected: