document localPassC consistently with compiler; fix ANSI capitalizati…

…on (#19721)

doc/manual.rst

@@ -1370,7 +1370,7 @@ cstring type
 The `cstring` type meaning `compatible string` is the native representation
 of a string for the compilation backend. For the C backend the `cstring` type
 represents a pointer to a zero-terminated char array
-compatible with the type `char*` in Ansi C. Its primary purpose lies in easy
+compatible with the type `char*` in ANSI C. Its primary purpose lies in easy
 interfacing with C. The index operation `s[i]` means the i-th *char* of
 `s`; however no bounds checking for `cstring` is performed making the
 index operation unsafe.
@@ -7218,16 +7218,16 @@ during semantic analysis:
   {.passc: gorge("pkg-config --cflags sdl").}
 
 
-LocalPassc pragma
+localPassC pragma
 -----------------
-The `localPassc` pragma can be used to pass additional parameters to the C
+The `localPassC` pragma can be used to pass additional parameters to the C
 compiler, but only for the C/C++ file that is produced from the Nim module
 the pragma resides in:
 
 .. code-block:: Nim
   # Module A.nim
   # Produces: A.nim.cpp
-  {.localPassc: "-Wall -Werror".} # Passed when compiling A.nim.cpp
+  {.localPassC: "-Wall -Werror".} # Passed when compiling A.nim.cpp
 
 
 PassL pragma