Use get instead of template get in REAMD.md and docs in non-template context (#4846)

Signed-off-by: Andy Choi <ccpong516@gmail.com>

docs/mkdocs/docs/api/adl_serializer/from_json.md

@@ -37,7 +37,7 @@ Copy of the JSON value, converted to `ValueType`
 ??? example "Example: (1) Default-constructible type"
 
     The example below shows how a `from_json` function can be implemented for a user-defined type. This function is
-    called by the `adl_serializer` when `template get<ns::person>()` is called.
+    called by the `adl_serializer` when `get<ns::person>()` is called.
         
     ```cpp
     --8<-- "examples/from_json__default_constructible.cpp"

docs/mkdocs/docs/api/macros/json_disable_enum_serialization.md

@@ -53,7 +53,7 @@ The default value is `0`.
         const json j = Choice::first; 
 
         // normally invokes from_json parse function but with JSON_DISABLE_ENUM_SERIALIZATION defined, it does not
-        Choice ch = j.template get<Choice>();
+        Choice ch = j.get<Choice>();
     }
     ```
 
@@ -86,7 +86,7 @@ The default value is `0`.
         const json j = Choice::first; 
 
         // uses user-defined from_json function defined by macro
-        Choice ch = j.template get<Choice>();
+        Choice ch = j.get<Choice>();
     }
     ```
 
@@ -109,7 +109,7 @@ The default value is `0`.
 
     void from_json(const json& j, Choice& ch)
     {
-        auto value = j.template get<std::string>();
+        auto value = j.get<std::string>();
         if (value == "first")
         {
             ch = Choice::first;
@@ -122,7 +122,7 @@ The default value is `0`.
 
     void to_json(json& j, const Choice& ch)
     {
-        auto value = j.template get<std::string>();
+        auto value = j.get<std::string>();
         if (value == "first")
         {
             ch = Choice::first;
@@ -139,7 +139,7 @@ The default value is `0`.
         const json j = Choice::first; 
 
         // uses user-defined from_json function
-        Choice ch = j.template get<Choice>();
+        Choice ch = j.get<Choice>();
     }
     ```
 

docs/mkdocs/docs/api/macros/json_use_implicit_conversions.md

@@ -46,7 +46,7 @@ By default, implicit conversions are enabled.
 
     ```cpp
     json j = "Hello, world!";
-    auto s = j.template get<std::string>();
+    auto s = j.get<std::string>();
     ```
 
 ## See also

docs/mkdocs/docs/api/macros/nlohmann_json_serialize_enum.md

@@ -37,7 +37,7 @@ inline void from_json(const BasicJsonType& j, type& e);
 
 !!! important "Important notes"
 
-    - When using [`template get<ENUM_TYPE>()`](../basic_json/get.md), undefined JSON values will default to the first specified
+    - When using [`get<ENUM_TYPE>()`](../basic_json/get.md), undefined JSON values will default to the first specified
       conversion. Select this default pair carefully. See example 1 below.
     - If an enum or JSON value is specified in multiple conversions, the first matching conversion from the top of the
       list will be returned when converting to or from JSON. See example 2 below.