doc: Fix style issues

doc/classes/@GDScript.xml

@@ -809,7 +809,7 @@
 			<argument index="1" name="to" type="float">
 			</argument>
 			<description>
-				Random range, any floating point value in the interval [[code]from[/code], [code]to[/code]].
+				Random range, any floating point value between [code]from[/code] and [code]to[/code].
 				[codeblock]
 				prints(rand_range(0, 1), rand_range(0, 1)) # prints 0.135591 0.405263
 				[/codeblock]
@@ -828,7 +828,7 @@
 			<return type="float">
 			</return>
 			<description>
-				Returns a random floating point value on the interval [0, 1].
+				Returns a random floating point value on the interval [code][0, 1][/code].
 				[codeblock]
 				randf() # returns 0.375671
 				[/codeblock]
@@ -838,7 +838,7 @@
 			<return type="int">
 			</return>
 			<description>
-				Returns a random 32 bit integer. Use remainder to obtain a random value in the interval [0, N] (where N is smaller than 2^32 -1).
+				Returns a random 32 bit integer. Use remainder to obtain a random value in the interval [code][0, N][/code] (where N is smaller than 2^32 -1).
 				[codeblock]
 				randi() % 20      # returns random number between 0 and 19
 				randi() % 100     # returns random number between 0 and 99

doc/classes/RandomNumberGenerator.xml

@@ -43,7 +43,7 @@
 			<argument index="1" name="to" type="int">
 			</argument>
 			<description>
-				Generates pseudo-random 32-bit signed integer between [code]from[/code] and [code]to[/code](inclusive).
+				Generates pseudo-random 32-bit signed integer between [code]from[/code] and [code]to[/code] (inclusive).
 			</description>
 		</method>
 		<method name="randomize">
@@ -56,6 +56,7 @@
 	</methods>
 	<members>
 		<member name="seed" type="int" setter="set_seed" getter="get_seed">
+			The seed used by the random number generator. A given seed will give a reproducible sequence of pseudo-random numbers.
 		</member>
 	</members>
 	<constants>