Another block of spelling fixes

Smaller this time

techlibs/common/simcells.v

@@ -19,7 +19,7 @@
  *
  *  The internal logic cell simulation library.
  *
- *  This verilog library contains simple simulation models for the internal
+ *  This Verilog library contains simple simulation models for the internal
  *  logic cells ($_NOT_ , $_AND_ , ...) that are generated by the default technology
  *  mapper (see "techmap.v" in this directory) and expected by the "abc" pass.
  *

techlibs/common/simlib.v

@@ -19,7 +19,7 @@
  *
  *  The Simulation Library.
  *
- *  This verilog library contains simple simulation models for the internal
+ *  This Verilog library contains simple simulation models for the internal
  *  cells ($not, ...) generated by the frontends and used in most passes.
  *
  *  This library can be used to verify the internal netlists as generated
@@ -1163,7 +1163,7 @@ input A, EN;
 `ifndef SIMLIB_NOCHECKS
 always @* begin
 	if (A !== 1'b1 && EN === 1'b1) begin
-		$display("Assertation %m failed!");
+		$display("Assertion %m failed!");
 		$stop;
 	end
 end

techlibs/common/techmap.v

@@ -19,7 +19,7 @@
  *
  *  The internal logic cell technology mapper.
  *
- *  This verilog library contains the mapping of internal cells (e.g. $not with
+ *  This Verilog library contains the mapping of internal cells (e.g. $not with
  *  variable bit width) to the internal logic cells (such as the single bit $_NOT_
  *  gate). Usually this logic network is then mapped to the actual technology
  *  using e.g. the "abc" pass.